Spare bit player (5)

I believe the answer is:

extra

I believe this clue is a double definition.

'spare' is the first definition.
('extra' can be a synonym of 'spare')

'bit player' is the second definition.
(thesaurus)

(Other definitions for extra that I've seen before include "Not a hit certainly" , "wide? It could be" , "23 player?" , "There's more" , "Bit actor in movie's crowd scenes" .)

I've seen this clue in The Times.

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