Entry 3 senses · 2 variants Webster, 1913 airbrush · IPA v. t. 01 A kind of atomizer for applying liquid coloring matter, such as paint, in a spray by compressed air. 1. A kind of atomizer for applying liquid coloring matter, such as paint, in a spray by compressed air. 02 v. t. to paint with an airbrush. 1. to paint with an airbrush. 2. to alter or remove by use of an airbrush.