English Dictionary

buff up

verb

(transitive, idiomatic) To improve. / (transitive) To shine; to make shiny. / (intransitive, idiomatic) To become more muscular. / (intransitive, idiomatic) To study hard to learn a particular subject.

I need to buff up my muscles before the competition.

意味（1）

(transitive, idiomatic) To improve.

[…] Mr. Kurz was quickly seen in Europe as the poster boy of an ascendant right for a new generation, a political Wunderkind who had salvaged conservatism by borrowing the far right’s agenda, buffing it up and bringing it into the mainstream.

意味（2）

(transitive) To shine; to make shiny.

意味（3）

(intransitive, idiomatic) To become more muscular.

意味（4）

(intransitive, idiomatic) To study hard to learn a particular subject.

I'll need to buff up on my Italian before my trip to Genoa.