• The obvious word is krebasygau, but that means "put on a wig" or "implant hair". kerfa has no place for the bow.

What does this mean in English, first of all?

I take it to mean 'to put new hair on a violin bow'. .i drani

kresabgau is more to the point, I think: x1 makes x2 (origin of hair) supply hair to x3 — nitcion