Crossword Genius

Call to allow lock (7)

Ross

I believe the answer is:

ringlet

'lock' is the definition.
(both can mean a piece of someone's hair)

'call to allow' is the wordplay.
'call' becomes 'ring' (telephone call).
'to allow' becomes 'let' ('let' can be a synonym of 'allow').
'ring'+'let'='RINGLET'

(Other definitions for ringlet that I've seen before include "A long tubular curl" , "Handy device" , "Curling lock of hair" , "Hair feature" , "Cluster of hair" .)

I've seen this clue in The Mirror.
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