plural of brush-up

To paint, or make clean or bright with a brush. / (idiomatic) To review; to improve an existing but rusty or underdeveloped skill.

Third-person singular simple present indicative form of brush up

simple past tense and past participle of brush up

present participle of brush up

(informal) A slight correction or modification. / (informal) A review of a topic to be learned.

(slang, archaic) To flatter or suck up to someone