verb Date: circa 1600 transitive verb to improve or polish as if by brushing, to renew one's skill in , intransitive verb to refresh one's memory ; renew one's skill , brushup noun
BRUSH UP
Meaning of BRUSH UP in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012