Ex-star replaced in crowd scenes (6)
I believe the answer is:
extras
'crowd scenes' is the definition.
The answer and definition can be both man-made objects as well as being plural nouns.
Perhaps there's an association between them I don't understand?
'ex-star replaced' is the wordplay.
'replaced' is an anagram indicator.
'star' is an anagram of 'tras'.
'ex'+'tras'='EXTRAS'
'in' is the link.
Can you help me to learn more?
(Other definitions for extras that I've seen before include "People employed in crowd scenes in film" , "Accessories" , "Sundries" , "Bit players, actors without dialogue" , "Minor actors in crowd scenes" .)