Hank's geese? (5)

I believe the answer is:

skein

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'hank's' is the definition.
(skein is a kind of hank)

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

(Other definitions for skein that I've seen before include "Flock on the move" , "Piece of loose-coiled yarn" , "Clock face" , "Ball of yarn" , "Loosely coiled length of thread" .)

I've seen this clue in the Evening Standard.

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