instrument is on the Basic English 850 List.
insect - instrument - insurance

Pronunciation change

Noun change

Singular
instrument

Plural
instruments

 
Some instruments, also called tools.
  1. (countable) An instrument is any thing people hold in their hand and use to do something.
    A hammer is a heavy instrument.
  2. (countable) An instrument is something used to play music.
    I enjoy playing music, my favorite instrument is the guitar.

See also change