From Longman Dictionary of Contemporary Englishmusical instrumentˌmusical ˈinstrument noun [countable] APMsomething that you use for playing music, such as a piano or guitar SYN instrument
Examples from the Corpus
musical instrument• An estimated 45 million people in the United States play a musical instrument.• We asked 100 kids in grades four through seven who played a musical instrument.• When biscuit-tin bashing gets boring, lend your toddler a real musical instrument for a treat. 