English Dictionary

swell box

noun

A box or chamber in an organ that contains the reeds or a set of pipes and has shutters that open or shut usually by means of a pedal in order to regulate the volume of musical tone.

I found a swell box at the antique store.

意味（1）

A box or chamber in an organ that contains the reeds or a set of pipes and has shutters that open or shut usually by means of a pedal in order to regulate the volume of musical tone.