The term 'bigger than a breadbox' is an idiom used to describe something that is LARGE in size. The crossword solutions for this term are LARGE (5 letters) and ISIT (4 letters). LARGE is an adjective meaning having a greater size than average, while ISIT is an informal way of asking if something is true or not. Therefore, the crossword solutions for the term 'bigger than a breadbox' can be interpreted as a question asking if something is larger than average.