Definition of

Clef

  1. (noun, communication) a musical notation written on a staff indicating the pitch of the notes following it

via WordNet, Princeton University

Origin of the word Clef

  1. 1576 in a musical sense, from M.Fr. clef, from L. clavis "key" (see slot (2)). The most common is the treble or G-clef, denoting the G above middle C on the piano. more

via Online Etymology Dictionary, ©2001 Douglas Harper

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