Crossword Genius

Fastening in wet conditions (5)

Ross

I believe the answer is:

twine

'fastening' is the definition.

'in wet conditions' is the wordplay.
'conditions' indicates anagramming the letters (letters must be in a new condition).
'in'+'wet'='inwet'
'inwet' with letters rearranged gives 'TWINE'.

(Other definitions for twine that I've seen before include "String of twisted fibres" , "Curl; string" , "Knot" , "can get into knots" , "Tough string" .)

I've seen this clue in The Mirror and The Daily Express.
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