(Internet slang, often sarcastic) Very intelligent; genius.

(neuroscience) The use of various techniques to image the structure and function of the nervous system.

(neuroscience) A device used to perform brain imaging.

(slang, derogatory) The degradation of mental faculties, intelligence, common sense, or moral character.

(slang) alternative form of give head

(obsolete, thieves' cant) Alternative form of jingle-brains.

(obsolete, thieves' cant) A man who is wild, thoughtless, whimsical, capricious or irresponsible.

Alternative spelling of brain rot

Alternative form of brainworm

plural of brain worm