brush up
[verb]
Synonyms: revise, bone up (informal), cram, go over, polish up, read up, refresh one's memory, relearn, study

[TahlilGaran] English Synonym Dictionary ▲

brush up (on) something phrasal verb (see also brush)
to practise and improve your skills or your knowledge of something that you learned in the past:
I must brush up on my French before I go to Paris.

[TahlilGaran] Dictionary of Contemporary English ▲

brush up
brush up (on (something))
to study again something you learned before.
Brushing up on computer skills can be important for any worker thinking about getting a new job.

[TahlilGaran] English Idioms Dictionary ▲

brush up
v. To refresh one's memory of or skill at by practice or review; improve; make perfect.
She spent the summer brushing up on her American History as she was to teach that in the fall.
He brushed up his target shooting.

[TahlilGaran] English Idioms Dictionary ▲