A utensil consisting of a piece of wood or other suitable material, set with small tufts or bunches of bristles, hair, or the like, for sweeping…

A brush for tidying and smoothing a person's hair.

Any of various kinds of brush used for cleaning and grooming the nails, hands, hair, for shaving, etc. Cf. toilet, n. 5a. Now rare.

a hairbrush without a handle (suitable for short or cropped hair).

= military hairbrush n.