A musical instrument was an instrument created or adapted to make musical sounds.

guitar was a musical instrument that could play chords. (PROSEThe Left-Handed Hummingbird)

Acting on behalf of Henry van Statten, Adam Mitchell paid 800,000 dollars for an alien device which the Ninth Doctor revealed to be a musical instrument. (TV: Dalek)

Community content is available under CC-BY-SA unless otherwise noted.