Cast or cast off? (6)
I believe the answer is:
actors
'cast' is the definition.
(I've seen this before)
'or cast off?' is the wordplay.
'off?' is an anagram indicator (I've seen 'off' mean this).
'or'+'cast'='orcast'
'orcast' is an anagram of 'ACTORS'.
(Other definitions for actors that I've seen before include "Luvvies" , "eg 9 & 11 across" , "The Gleeson boys, say" , "They 23 down" , "Theatrical performers" .)