Actor's assistant, possibly Welsh (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 don't understand how the rest of the clue works.

(Other definitions for dresser that I've seen before include "one coming into line?" , "Welsh sideboard" , "Item of furniture - actor's assistant" , "Piece of kitchen furniture" , "Theatre worker back-stage" .)

I've seen this clue in the Evening Standard.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.