Display cabinet useful to an actor (7)
I believe the answer is:
dresser
This might be a double definition.
'display cabinet' is the first definition.
'dresser' can be an answer for 'cabinet' (dresser is a kind of cabinet). I am not certain of the 'display' bit.
'useful to an actor' is the second definition.
(staff member who dresses an actor)
Can you help me to learn more?
(Other definitions for dresser that I've seen before include "Theatre worker back-stage" , "Person who puts clothes" , "help in the theatre" , "One who treats wounds" , "may be Welsh" .)