Art?

This week in class we discussed that some people have very different meanings of what art is. Even though every day new and different forms of art are created, the line between what actually is art and what is not seems to be growing very thin. Therefore I feel it important to discuss some common definitions of what art ids defined as to some people. Dictionary.com defines art as the quality, production, expression, or realm, according to aesthetic principles, of what is beautiful, appealing, or of more than ordinary significance. People's opinion of art is usually regarding that of the aesthetic value of what is being regarded as art. When referring to the aesthetic value of something, usually people are referring to the appearance or the beauty of the object that appears appealing to the senses. The general appearance of the artwork is usually what makes people assume their judgement's on what is appealing about it and what all together they like about it.
Art is also thought of as a deliberate way of arranging items and objects in away that is generally anticipating affecting emotions and feelings. The hope of the artist usually is to arouse extreme feelings of either happy or sad. The artist wants the viewer to be moved by what they have created. Therefore, one can acknowledge art as something that is intended to stimulate great emotion. 
Now, with all of this in mind, I ask, what do you think the definition of art is?