1. Practice intended to polish performance or refresh the memory
   "He needed a quick brushup on his Spanish before the trip";
   - review, brush-up

1. [Brit, informal] A quick clean or tidy
   "Give the kitchen a brush-up before the guests arrive"

1. Refresh one's memory
   "I need to brush up on my Spanish before the trip";
   - review, refresh, revise [Brit]
    
2. Bring to a highly developed, finished, or refined state
   "brush up your social manners";
   - polish, round, round off, polish up

Derived forms: brush-ups, brushes up, brushups, brushing up, brushed up

Type of: call back, call up, drill, exercise, hone, perfect, practice, practice session, recall, recollect, remember, retrieve, think