Meaning of “brush” - Learner’s Dictionary

brush

verb [ T ] uk us /brʌʃ/

A2 to use a brush to clean or tidy something:

to brush your hair/teeth
brush sth away/off, etc

B2 to move something somewhere using a brush or your hand:

He brushed the snow off his coat.
brush against/past sb/sth

B2 to lightly touch someone or something as you move past:

He brushed past me as he went up the stairs.

(Definition of “brush verb” from the Cambridge Learner’s Dictionary © Cambridge University Press)