Put wolves in a suitcase (4)

I believe the answer is:

pack

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'put wolves' is the definition.
'pack' can be an answer for 'wolves' (pack of wolves). I am unsure of the 'put' bit.

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

Can you help me to learn more?

(Other definitions for pack that I've seen before include "Group (of wolves)" , "Cardboard container" , "Stow" , "Put clothes etc into suitcase" , "Wolf group" .)

I've seen this clue in The Daily Express.

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