Actor Nicolas
I believe the answer is:
cage
'actor nicolas' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for cage that I've seen before include "Structure of bars or wire" , "Enclosure of wire or metal bars" , "In which birds or animals are kept" , "Composer working in silence" , "Tffhe goal in ice hockey" .)