crapaud

toad; baby grand piano; flaw (in a diamond); an ugly man; frog

Inherited from Middle French crapaud, from Old French crapaut, crapot (“frog, toad”), from Frankish *krappō, *krappa (“hook, claw”) (because of a toad's hooked feet) + -aud. Compare Catalan gripau, Occitan grapaut. Displaced Old French froiz (“toad”), from Old Norse frauðr (“frog”).