1. the office of a theater, stadium, or the like, at which tickets are sold.
2. Theat. a. receipts from a play or other entertainment.
b. entertainment popular enough to attract paying audiences and make a profit: This show will be good box office.
Pronunciation: (boks'ô"fis, -of"is),[key] —adj. of or pertaining to the box office or to the business and commercial aspects of the theater: a box-office window; box-office receipts; a box-office attraction.