Crossword Genius

Guard club, securing implement (11)

Ross

I believe the answer is:

screwdriver

'securing implement' is the definition.
(implement used to secure things)

'guard club' is the wordplay.
'guard' becomes 'screw' (I've seen this before).
'club' becomes 'driver' (driver is a kind of club).
'screw'+'driver'='SCREWDRIVER'

(Other definitions for screwdriver that I've seen before include "Common tool" , "Hand tool - cocktail" , "may make a fixer tight?" , "that'll turn a few heads" , "Woodworker's tool" .)

I've seen this clue in The Times.
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