brush

1. (uncountable) Wild vegetation, generally larger than grass but smaller than trees. See shrubland.Examples: "We broke away toward the north, the tribe howling on our track. Across the open spaces we gained, and in the brush they caught up with us, and more than once it was nip and tuck."; "One typical Grecian kiln engorged one thousand muleloads of juniper wood in a single burn. Fifty such kilns would devour six thousand metric tons of trees and brush annually."uncountable

2. (zoology) A tuft of hair on the mandibles.countableuncountable

3. (archaic) A short contest, or trial, of speed.Examples: "1860, Anthony Trollope, Framley Parsonage (originally published in Cornhill Magazine Mark and Lord Lufton had been boys together, and his lordship knew that Mark in his heart would enjoy a brush across the country quite as well as he himself."archaiccountableuncountable

4. (music) An instrument, resembling a brush, used to produce a soft sound from drums or cymbals.countableuncountable

5. (computer graphics) An on-screen tool for "painting" a particular colour or texture.Examples: "Your bitmap image appears along the painted stroke. If you'd like to permanently create a custom sprite brush, it's fairly easy to adapt an existing MEL file[…]."countableuncountable

6. (computer graphics) A set of defined design and parameters that produce drawn strokes of a certain texture and quality.Examples: "to download brushes for Photoshop"countableuncountable