Possibly a return engagement (3)

I believe the answer is:

gig

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'engagement' is the definition.
(gig is a kind of engagement)

I don't understand how the remainder of the clue works.

(Other definitions for gig that I've seen before include "Palindromic one-night engagement" , "Live musical performance" , "A booking for musicians" , "Perform live < in boat" , "Date" .)

I've seen this clue in the Evening Standard.

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