Yarn bundles (6)
I believe the answer is:
skeins
'yarn bundles' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for skeins that I've seen before include "Wild goose" , "Hanks of yarn" , "Coils of yarn" , "Flocks of geese" , "Loosely coiled bundles of wool" .)