What is art?

According to Britannica Online, art is the "use of skill and imagination in the creation of aesthetic objects, environments, or experiences that can be shared with others."

Personally, I think of art as a way to express oneself. You can't really explain the meaning of art because even though you can show people what you've created, it does not accurately reflect how the artist felt when they created their piece. They may imagine or somewhat understand the motive behind your creation, however, since art is ultimately the expression of oneself, I think that art cannot be fully understood by others. Unless you explain in detail your inspirations, how your ideas come to be and such, the art that a person creates is ultimately only understood by its creator. Just as kids create art of their own, adults do not really have a full insight as to what the children creates, even so, they appreciate it. Art can be appreciated without knowing the story behind it, but personally, I think that it is this aspect that makes art such a strong way to express oneself. It visually excites and can tell a great tale. This is my definition of art, but