Where does “gamba” come from?

gamba (Medieval Latin) comes from Ancient Greek καμπή, from Proto-Indo-European kh₂emp-, from Proto-Indo-European kh₂em- — to bend, to curve.

Ancestry of “gamba”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	καμπή	winding, such as of a river; the turning post in...
2	Proto-Indo-European	kh₂emp-	to bend; crooked; to bend, curve
3	Proto-Indo-European	kh₂em-	to bend, to curve