paintbrush

noun

A brush for applying paint.

In botany, the shrubby St. John's-wort, Hypericum proliftcum, so called from its brush of yellow stamens; also the king-devil, Hieracium præaltum, named with reference to the yellow flower-head.

A brush used to apply paint.

A thin brush for applying paint.

A brush used as an applicator (to apply paint).