Strike in a clothes factory (7)

I believe the answer is:

clobber

I'm a little stuck... Click here to teach me more about this clue!

'strike' is the definition.
(I've seen this before)

I don't understand how the rest of the clue works.

(Other definitions for clobber that I've seen before include "stuff" , "Severely criticise" , "Whack" , "bash" , "beat-up" .)

I've seen this clue in the Evening Standard.

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