letter bomb

Từ điển WordNet v3.1 - WordNet Dictionary

I - noun

a thin explosive device inside an envelope or package and detonated when opened
• Syn:
parcel bomb, package bomb
• Hypernyms:
bomb

II - verb

send an explosive to
- The Unabomber letter bombed a number of individuals and institutions
• Hypernyms:
bombard, bomb
• Verb Frames:
- Somebody ----s somebody