Crossword Genius

Run off to get fastening (4)

Ross

I believe the answer is:

bolt

I believe this is a double definition.

'run off' is the first definition.
(I know that run off can be written as bolt)

'fastening' is the second definition.
(bolt is a kind of fastening)

'to get' is the link.

(Other definitions for bolt that I've seen before include "playwright" , "wolf" , "Lightning flash, fasten" , "From the blue, it's a great surprise" , "Type of lightning" .)

I've seen this clue in The Mirror.
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