Tuning peg
DEFINITION
On string instruments, a device to control the tension of the strings. Typically, this is a type of wooden dowel, with the end of the string attached, inserted into a hole in the pegbox that is located between the fingerboard and the scroll. With a slight turn of the dowel, the player can either tighten the tension of the string to raise the pitch of the string or loosen the tension of the string to lower the pitch of the string until the string is in tune.