Olivier Award winner of 1981 (4)
I believe the answer is:
cats
'olivier award winner of 1981' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for cats that I've seen before include "Domestic pets" , "1981 Lloyd Webber musical" , "Feline musical by Andrew Lloyd Webber" , "Jaguars, say" , "Pets - musical" .)