Actor's assistant of no use in a strip club? (7)

I believe the answer is:

dresser

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

'actor's assistant' is the definition.
(synonyms)

I cannot understand how the rest of the clue works.

(Other definitions for dresser that I've seen before include "one employed backstage" , "Sideboard with shelves on top" , "big chest" , "Piece of dining-room furniture" , "another" .)

I've seen this clue in The Guardian.

Want a hint initially instead of a full solution? Install my app