1. brush up - Noun
2. brush up - Verb
bring to a highly developed, finished, or refined state
refresh one's memory
Source: WordNetbrush-up
polish your social manners Source: Internet
I reviewed the material before the test Source: Internet
As you build up more Styles you may start to brush up against this limit. Source: Internet
A great way to begin learning programming or brush up your old skills. Source: Internet
“I had these little mealy-mouthed boys hovering all around me, trying to brush up against me or aim their hands towards my boobs. Source: Internet
Amanda - Researching for meant mostly that I had to brush up on my knowledge of the Highlands, because I’d been writing for some time about the Scottish Borders. Source: Internet