Clef

n.

1.

(Mus.) A character used in musical notation to determine the position and pitch of the scale as represented on the staff. Alto clef See under Alto, Bass.

Noun

1.

clef - a musical notation written on a staff indicating the pitch of the notes following it

alto clef, bass clef, C clef, F clef, G clef, musical notation, soprano clef, tenor clef, treble clef, viola clef