Hackle has 4 different meanings across 2 categories:
Noun · Verb
long slender feather on the necks of e.g. turkeys and pheasants
An instrument with steel pins used to comb out flax or hemp.
comb with a heckle
"heckle hemp or flax"
To dress (flax or hemp) with a hackle; to prepare fibres of flax or hemp for spinning.