A perk for the lesser-known actor (5)

I believe the answer is:

extra

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'actor' is the definition.
(extra is a type of actor)

I cannot understand how the rest of the clue works.

(Other definitions for extra that I've seen before include "Run; in addition" , "Bit actor in film" , "additional supplies" , "Crowd-scene actor" , "Bit player in film" .)

I've seen this clue in The Globe and Mail.

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