Where does “colfos” come from?

colfos (Latin) comes from Latin colpus, from Ancient Greek κόλπος, from Proto-Indo-European kʷelp-, from Proto-Indo-European kʷel- — to turn.

Ancestry of “colfos”, step by step

Step	Language	Word	Meaning
1	Latin	colpus	stroke; strike; hit
2	Ancient Greek	κόλπος	bosom, lap; a fold in fabric around the bosom;...
3	Proto-Indo-European	kʷelp-	to bend; to curve, arch
4	Proto-Indo-European	kʷel-	to turn