brainbox

English

Etymology

From brain +‎ box.

Pronunciation

• Audio (General Australian):

  (file)

Noun

brainbox (plural brainboxes)

1. The cavity of the skull in which the brain is contained.
   • 1985, J.D. McDonald, Australian Birds: A Popular Guide to Bird Life, Sydney: Reed Books, page 142:

     The compromise was to use as much of the skull as possible by pushing the eyes in towards the centre, and relegating the brain box to the rear.

2. (slang) A very intelligent person.
3. (slang) The head or skull (which encloses the brain).

Synonyms

• (very intelligent person): brainiac, egghead
• (skull): brain bucket, brainpan, cranium