A receptacle with an opening into which people may place slips of paper containing suggestions for improvement, or for similar feedback

(music) The open chamber (resonator) of a stringed musical instrument, which intensifies its tone.

Alternative form of out of the box (especially in attributive use)

The raised box in the apron of a stage, opening towards the actors. The prompter sits inside with the prompter's book, ready to give cues for missed or forgotten lines.

Children’s toy consisting of a small box from which a male figure pops out unexpectedly after some turnings of a crank.

(chiefly Britain and Canada) A blue container used for the collection of household waste (such as tin cans and newspapers) for recycling by a municipal authority.

A post office box; a lockable box hired from the postal authorities or a private company as a collection point for mail.

(idiomatic) Beyond the bounds of convention.

The area in a courtroom wherein the jury is seated during a trial.

(computing) A text box for the input of text to be searched for in a database, on the Internet, etc.