- a musical instrument, as the drum, cymbal, triangle, xylophone, or piano, that is struck to produce a sound, as distinguished from string or wind instruments.
- any of various musical instruments that produce a sound when their resonating surfaces are struck directly, as with a stick or mallet, or by leverage action. They may be of definite pitch (as a kettledrum or xylophone), indefinite pitch (as a gong or rattle), or a mixture of both (as various drums)
