Where does “koori” come from?

koori (Woleaian) comes from Japanese 氷, from Middle Chinese 冰.

koori (Woleaian): ice

Definitions

Step	Language	Word	Meaning
1	Japanese	氷	ice; a cold and sharp object, as a shard of ice;...
2	Middle Chinese	冰	—

koori — Etymology, Origin & Word History | Etymology Explorer