A dance one saw as a puzzle? (3)

I believe the answer is:

jig

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'a dance' is the definition.
(I know that jig is a type of dance)

I don't understand the rest of the clue.

(Other definitions for jig that I've seen before include "Lively leaping dance" , "A lively jumping dance" , "Irish dance" .)

I've seen this clue in the Evening Standard.

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