WordReference Random House Learner's Dictionary of American English © 2025
bust•er /ˈbʌstɚ/USA pronunciation
n. [countable] Informal.
WordReference Random House Unabridged Dictionary of American English © 2025- Informal Termsa person who destroys something:crime busters.
- Informal Terms[often: Buster] (used as a familiar but mildly impolite term of address to a man or boy): Watch it, Buster!
bust•er
(bus′tər),USA pronunciation n. [Informal.]
Bus•ter (bus′tər),USA pronunciation n.
- Informal Termsa person who breaks up something:crime busters.
- Informal Termssomething that is very big or unusual for its kind.
- Informal Termsa loud, uproarious reveler.
- Informal Termsa frolic;
spree. - Informal Terms(cap.) (used as a familiar term of address to a man or boy who is an object to the speaker's annoyance or anger):Look, Buster, you're standing in my way!
- bust2 + -er1 1825–35, American.
Bus•ter (bus′tər),USA pronunciation n.
- a male given name.
'buster' also found in these entries (note: many are not synonyms or translations):
Buster Brown collar
- Keaton
- ball-buster
- blockbuster
- bonkbuster
- broncobuster
- gangbuster
- lister
- middlebuster
- sodbuster
- trustbuster
- union buster