mug up

Từ điển WordNet v3.1 - WordNet Dictionary

verb

study intensively, as before an exam
- I had to bone up on my Latin verbs before the final exam
• Syn:
cram, grind away, drum, bone up, swot,
get up, swot up, bone
• Derivationally related forms:
swot (for: swot), crammer (for: cram)
• Hypernyms:
study, hit the books
• Verb Group:
cram
• Verb Frames:
- Somebody ----s
- Somebody ----s something PP