Definition of brainbox
1a : cranium, braincase Your brain box is about to whack the pavement—hard! — Consumer Reports, July/August 1996 b : mind, brain And why did everyone insist on reminding him of his ex-wife? Because all it did was bring her right back into his head again, back into the old brainbox, where she'd always done the most damage. — Robert McCarthy, Zoetrope: All-Story, Spring 2005
2 chiefly British : a very intelligent person I was good at school; I was a total brain box. At a small town school, being brainy was not necessarily an asset. — Karine Polwart, quoted in The (London) Times Educational Supplement, 15 Feb. 2013
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First Known Use of brainbox
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