Crossword Genius

Fasten hair (4)

Ross

I believe the answer is:

lock

This clue is a double definition.

'fasten' is the first definition.
(I know that lock is a type of fasten)

'hair' is the second definition.
(I know that lock is a type of hair)

(Other definitions for lock that I've seen before include "Tress of hair" , "Key in this" , "Rugby player" , "Security device - tuft of hair" , "Strand(s) of hair" .)

I've seen this clue in The Telegraph.
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