pitch pipe

noun

1. a small flute or reed pipe producing one or more pitches when blown into, used chiefly for establishing the proper pitch in singing or in tuning a musical instrument.

pitch pipe

noun

1. a small pipe, esp one having a reed like a harmonica, that sounds a note or notes of standard frequency. It is used for establishing the correct starting note for unaccompanied singing

Word History and Origins

Origin of pitch pipe¹

First recorded in 1705–15