A resilient chucker-out (7)

I believe the answer is:

bouncer

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'chucker-out' is the definition.
(synonyms)

I don't understand the remainder of the clue.

(Other definitions for bouncer that I've seen before include "Nightclub door worker" , "Dance-hall employee" , "Dud cheque" , "He guards the entrance to nightclubs" , "Chucker-out for nightclub" .)

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