brains /bɹeɪnz/noun 3phrases 3 noun[plural only]3 •The substance of a brain, as a material or foodstuff.I would, while it was smiling in my face, Have pluck'd my nipple from his boneless gums, And dash'd the brains out, had I so sworn as you Have done to this. — 1606 •(informal) The figurative substance of a brain: mental ability, intelligence.Sadly, I got my brains from my mom and my looks from the mailman. •(informal) The intelligent person or people in a group: the director, planner, administrator, etc.Who's the brains behind this operation? Phrases with brains beat one's brains outto think very hard about. blow someone's brains outTo shoot someone in the head. fuck someone's brains outTo sexually penetrate (or be penetrated) in a vigorous but pleasurable manner.
