FRET (7)

Fret (?), n. [[F. frette a saltire, also a hoop, ferrule, prob. a dim. of L. ferrum iron. For sense 2, cf. also E. fret to rub.]] 1. 1. (Her.) A saltire interlaced with a mascle.
2. 2. (Mus.) A short piece of wire, or other material fixed across the finger board of a guitar or a similar instrument, to indicate where the finger is to be placed.