Crossword clues for the word: BRAINBOX The word BRAINBOX has appeared as an answer to at least 6 crossword clues on different crossword puzzles. Crossword clues for BRAINBOX Showing 1 to 6 of 6 results Clue(s) Bright spark gets top five in 25 across to strike Clever person Fight over state rule by blockhead or clever clogs One of The Eggheads is a follower of most of 23 down on television Shower in hostelry is old and at times capable of being very bright Very clever person