Wiktionary
alt. (context idiomatic vulgar English) A person or task which is excessively demanding or punishing. n. (context idiomatic vulgar English) A person or task which is excessively demanding or punishing.
WordNet
n. a demanding woman who destroys men's confidence [syn: ball-buster]
a job or situation that is demanding and arduous and punishing; "Vietnam was a ball-breaker" [syn: ball-buster]
Usage examples of "ball-breaker".
That was when I found out the true meaning of the term ball-breaker and limped for days.
They were absolute ball-breakers which, not coincidentally, was Tony's designation for the highest difficulty codes he was given to crack.
At an early age they had been seized in West Africa and separated from their mothers by this new species, the humans, and removed from all familiar surroundings and put in cages and shipped to this godforsaken alien landscape, the New Mexico desert, where they remained in cages… when they weren't in the hands of a bunch of human ball-breakers in white smocks who strapped them down and zapped them and put them through insane exercises and routines.