Art meaning

There is no universally accepted definition of art. Although commonly used to describe something of beauty, or a skill which produces an aesthetic result, there is no clear line in principle between (say) a unique piece of handmade sculpture, and a mass-produced but visually attractive item. We might say that art requires thought - some kind of creative impulse - but this raises more questions: for example, how much thought is required? If someone flings paint at a canvas, hoping by this action to create a work of art, does the result automatically constitute art?
Even the notion of 'beauty' raises obvious questions. If I think my kid sister's unmade bed constitutes something 'beautiful', or aesthetically pleasing, does that make it art? If not, does its status change if a million people happen to agree with me, but my kid sister thinks it is just a pile of clothes?

Before trying to define art, the first thing to be aware of, is its huge scope.
Art is a global activity which encompasses a host of disciplines, as evidenced by the range of words and phrases which have been invented to describe its various forms. Examples of such phraseology include: "Fine Arts", "Liberal Arts", "Visual Arts", "Decorative Arts", "Applied Arts", "Design", "Crafts", "Performing Arts", and so on.
Drilling down, many specific categories are classified according to the materials used, such as: drawing, painting, sculpture (inc. ceramic sculpture), "glass art", "metal art", "illuminated gospel manuscripts", "aerosol art", "fine art photography", "animation", and so on. Sub-categories include: painting in oils, watercolours, acrylics; sculpture in bronze, stone, wood, porcelain; to name but a tiny few. Other sub-branches include different genre categories, like: narrative, portrait, genre-works, landscape, still life.
In addition, entirely new forms of art have emerged during the 20th century, such as: assemblage, conceptualism, collage, earthworks, installation, graffiti, and video, as well as the broad conceptualist movement which challenges the essential value of an objective "work of art". other thing to be aware of, is the fact that art reflects and belongs to the period and culture from which it is spawned.
After all, how can we compare prehistoric murals (eg. stone age cave painting) or tribal art, or native Oceanic art, or primitive African art, with Michelangelo's 16th century Old Testament frescoes on the walls and ceiling of the Sistine Chapel? Political events are the most obvious era-factors that influence art: for example, art styles like Expressionism, Dada, and Surrealism were products of political uncertainty and upheavals.
Cultural differences also act as natural borders. After all, Western draughtsmanship is light years away from Chinese calligraphy; and what Western artform compares with Japanese origami paper art? Religion is a major cultural variable that alters the shape of the artistic envelope. The Baroque style was strongly influenced by the Catholic Counter-Reformation, while Islamic art (like Orthodox Christianity), forbids certain types of artistic iconography.
In other words, whatever definition of art we arrive at, it is bound to be limited to our era and culture. Even then, categories like Outsider art have to be taken into consideration. See also: Primitivism/Primitive Art.
As you can see from the above, the world of art is a highly complex entity, not only in terms of its multiplicity of forms and types, but also in terms of its historical and cultural roots. Therefore a simple definition, or even a broad consensus as to what can be labelled art, is likely to prove highly elusive.
Definition of Art is Limited by Era and Culture
Another thing to be aware of, is the fact that art reflects and belongs to the period and culture from which it is spawned.
After all, how can we compare prehistoric murals (eg. stone age cave painting) or tribal art, or native Oceanic art, or primitive African art, with Michelangelo's 16th century Old Testament frescoes on the walls and ceiling of the Sistine Chapel? Political events are the most obvious era-factors that influence art: for example, art styles like Expressionism, Dada, and Surrealism were products of political uncertainty and upheavals.
Cultural differences also act as natural borders. After all, Western draughtsmanship is light years away from Chinese calligraphy; and what Western artform compares with Japanese origami paper art? Religion is a major cultural variable that alters the shape of the artistic envelope. The Baroque style was strongly influenced by the Catholic Counter-Reformation, while Islamic art (like Orthodox Christianity), forbids certain types of artistic iconography.
In other words, whatever definition of art we arrive at, it is bound to be limited to our era and culture. Even then, categories like Outsider art have to be taken into consideration. See also: Primitivism/Primitive Art.
Conclusion
As you can see from the above, the world of art is a highly complex entity, not only in terms of its multiplicity of forms and types, but also in terms of its historical and cultural roots. Therefore a simple definition, or even a broad consensus as to what can be labelled art, is likely to prove highly elusive.

History of the Definition of Art
For a guide to movements and periods, see also: History of Art.
Classical Meaning of Art
The original classical definition - derived from the Latin word "ars" (meaning "skill" or "craft") - is a useful starting point. This broad approach leads to art being defined as: "the product of a body of knowledge, most often using a set of skills." Thus Renaissance painters and sculptors were viewed merely as highly skilled artisans (interior-decorators?). No wonder Leonardo Da Vinci and Michelangelo went to such efforts to elevate the status of artists (and by implication art itself) onto a more intellectual plane.

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Post-Renaissance Meaning of Art
The emergence of the great European academies of art reflected the gradual upgrading of the subject. New and enlightened branches of philosophy also contributed to this change of image. By the mid-18th century, the mere demonstration of technical skills was insufficient to qualify as art - it now needed an "aesthetic" component - it had to be seen as something "beautiful."
At the same time, the concept of "utilitarianism" (functionality or usefulness) was used to distinguish the more noble "fine arts" (art for art's sake), like painting and sculpture, from the lesser forms of "applied art", such as crafts and commercial design work, and the ornamental "decorative arts", like textile design and interior design.
Thus, by the end of the 19th century, art was separated into at least two broad categories: namely, fine art and the rest - a situation that reflected the cultural snobbery and moral standards of the European establishment. Furthermore, despite some erosion of faith in the aesthetic standards of Renaissance ideology - which remained a powerful influence throughout the world of fine art - even painting and sculpture had to conform to certain aesthetic rules in order to be considered "true art".
Meaning of Art During the Early 20th Century
Then came Cubism (1907-14), which rocked the fine arts establishment to its foundations. Not simply because Picasso introduced a non-naturalistic branch of painting and sculpture, but because it shattered the monotheistic Renaissance approach to how art related to the world around it. Thus, Cubism's main contribution was to act as a sort of catalyst for a host of new movements which greatly expanded the theory and practice of art, such as: Suprematism, Constructivism, Dada, Neo-Plasticism, Surrealism and Conceptualism, as well as various realist styles, such as Social and Socialist Realism. In practice, this proliferation of new styles and artistic techniques led to a new broadening of the meaning and definition of art. In its escape from its "Renaissance straitjacket", and all the associated rules concerning "objectivity" (eg. on perspective, useable materials, content, composition, and so on), fine art now boasted a significant element of "subjectivity". Artists suddenly found themselves with far greater freedom to create paintings and sculpture according to their own subjective values. In fact, one might say that from this point "art" started to become "indefinable".
The decorative and applied arts underwent a similar transformation due to the availability of a vastly increased range of commercial products. However, the resultant increase in the number of associated design and crafts disciplines did not have any significant impact on the definition and meaning of art as a whole.
Meaning of Art Post-World War II
The cataclysm of WWII led to the demise of Paris as the capital of world art, and its replacement by New York. This new American orientation encouraged art to become more of a commercial product, and loosen its connection with existing traditions of aestheticism - a trend furthered by the emergence of Abstract Expressionism, Pop-Art, and the activities of the new breed of celebrity artists like Andy Warhol. All of a sudden, even the most mundane items and concepts became elevated to the status of "art". Under the influence of this populist approach, conceptualists introduced new artforms, like assemblage, installation, video and performance. In due course, graffiti added its own mark, as did numerous styles of reinterpretation, like Neo-Dada, Neo-Expressionism, and Neo-Pop, to name but three. Schools and colleges of art throughout the world dutifully preached the new polytheism, adding further fuel to the bonfire of Renaissance art traditions.
Postmodernism and the Meaning of Art
The redefinition of art during the last three decades of the 20th century has been lent added intellectual weight by theorists of the postmodernist movement. According to the postmoderns, the focus has shifted from artistic skill to the "meaning" of the work produced. In addition, "how" a work is "experienced" by spectators has become a critical component in its aesthetic value. The phenomenal success of contemporary artists like Damien Hirst, as well as Gilbert and George, is clear evidence in support of this view. For more about experimental artists, see: avant-garde art. http://www.visual-arts-cork.com/art-definition.htm#whatisart