Where does “bïsaq” come from?

bïsaq (Yakut) comes from Proto-Turkic *bïčgak, from Proto-Turkic *bïč- — to cut.

Ancestry of “bïsaq”, step by step

Step	Language	Word	Meaning
1	Proto-Turkic	*bïčgak	—
2	Proto-Turkic	*bïč-	to cut

Words derived from “bïsaq”

быһах

Every word from Proto-Turkic *bïč- →Every word from Proto-Turkic *bïčgak →