a person who breaks horses
"The seasoned buster broke in the wild mustangs before selling them to ranchers."
a person (or thing) that breaks up or overpowers something
"dam buster"
"sanction buster"
"crime buster"
a person born in the generation following the baby boom when the birth rate fell dramatically
"As a buster, he was part of the demographic drop that followed the massive baby boom of his parents' generation."
Someone who or something that bursts, breaks, or destroys a specified thing.
"The batter was known as a home run buster because he consistently crushed any pitch thrown his way."
In plain English: A buster is someone who breaks things, often used to describe an unruly person causing trouble.
"The buster made sure that no secrets were kept in our group chat."
Usage: Use buster to describe an explosive device designed specifically to destroy targets like dams or bridges rather than personnel. It is often confused with the verb form in phrases like "bust someone out," but as a noun it refers strictly to the destructive object itself.
A surname.
"Buster is my best friend's nickname, even though his real name is Robert."
A male given name.
Buster began as a dialectal variant of burster before being reshaped by combining "bust" with the suffix "-er." Its usage surged throughout the early 20th century due to popular culture, including the radio show Gang Busters in the 1930s and the film Ghostbusters in the 1980s.