Other forms: paintbrushes
A paintbrush is the tool with soft hairs you dip in colour to make pictures. A fine paintbrush, clean the paintbrush, a set of paintbrushes.
The shape decides the mark: a round one holds a point for detail and a flat one lays a broad edge. Natural hair holds more liquid and synthetic keeps its spring better, which is why watercolourists and acrylic painters choose differently.
1nounpaintbrushThe tool with soft hairs used to apply paint.
“She dipped her paintbrush in the water and washed off the blue paint.”
paintbrush is a tool.
Also accepted in games: brush
Paint plus brush. Brush comes from Old French brosse, brushwood, since early brushes were bundles of twigs.
From paint + brush.
Etymology from Wiktionary, CC BY-SA