blow one's brains out

blow (one's) brains out

slang To fatally shoot someone in the head. Ray blew the informant's brains out, just as the boss told him to.
See also: blow, brain, out

blow one's brains out

Shoot oneself in the head, as in Blowing one's brains out is more a man's type of suicide; women lean toward poison. [Early 1800s]
See also: blow, brain, out