The Collaborative International Dictionary
Poak
Poak \Poak\, Poake \Poake\, n. Waste matter from the preparation of skins, consisting of hair, lime, oil, etc.
Wiktionary
poak
alt. waste matter from the preparation of skins, consisting of hair, lime, oil, etc. n. waste matter from the preparation of skins, consisting of hair, lime, oil, etc.