My definition of a painting:
A few brilliant strokes of paint to be found among a number of not so brilliant stokes of paint with a large number of useless strokes of paint added in a feeble attempt to correct the not so brilliant strokes of paint.
Probably could include literature, film making, music composition as well. In fact probably could include the universe.
Just wanted to help those in the art academic world who may be researching the topic.