clef
UK[klɛf]US[klɛf]
n
A symbol placed at the beginning of a staff in musical notation to indicate the pitch of the notes.
Etymology
The word 'clef' entered English in the 16th century from the French word 'clef', meaning 'key'. This French term itself derives from the Latin 'clavis', also meaning 'key'. The semantic connection is clear: just as a key opens a lock, the clef on a musical staff 'unlocks' or 'opens' the meaning of the written notes by defining their pitch. This metaphorical use of 'key' for a musical pitch indicator is preserved in several languages, including German ('Schlüssel') and Italian ('chiave').
Analysis
The word is a simplex loanword from French. It cannot be meaningfully segmented into smaller, independent morphemes within the modern English spelling.
Examples
The treble clef is commonly used for higher-pitched instruments like the violin.
Before playing, the musician carefully noted the bass clef at the start of the line.
The piece required a sudden change from the alto clef to the tenor clef.