the mind > mental capacity > perception or cognition > faculty of ideation > idea, notion, or concept > [noun] > bright (6)
an outstandingly brilliant or inspired idea.
(a) A (supposed) telepathic wave emanating from the brain (cf. brain vibration n. (a) at brain, n. compounds 2). Now rare. (b) colloquial. A sudden…
(a) U.S. colloquial. = brain wave, n. 1b. (b) Originally U.S. A concerted attempt to solve a problem, usually by a group discussion of spontaneously…