Actors the second act’s revolving round (5)
I believe the answer is:
casts
'actors' is the definition.
Although both the answer and definition are plural nouns, I don't see how they can define each other.
'second act's revolving round' is the wordplay.
'second' becomes 's' (common abbreviation).
'revolving' is an anagram indicator (letters turning or twisting around).
'round' indicates putting letters inside.
'acts' is an anagram of 'cats'.
's' placed inside 'cats' is 'CASTS'.
'the' acts as a link.
Can you help me to learn more?
(Other definitions for casts that I've seen before include "Eg puts" , "groups of actors" , "Allocates parts" , "Throws" , "Assigns an actor to a role" .)