CLEF


Meaning of CLEF in English

/ klef; NAmE / noun

( music ) a symbol at the beginning of a line of printed music (called a stave or staff ) that shows the pitch of the notes on it :

the treble / bass clef

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WORD ORIGIN

late 16th cent.: from French , from Latin clavis key.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.