Meaning

noun small North American falcon

noun small Old World falcon that hovers in the air against a wind

originFrom Middle English castrel (“staniel, bird of prey”), from Middle French cresserelle, crecerelle (“bird of prey”), usually assumed to be from crecelle (“rattle, wooden reel”) (modern crécelle), of obscure origin. Cognates possibly include: Medieval Latin clisterella f, French crécerelle f and cristel m, Neapolitan castariello m and crestariello m, all sharing the same meaning. Derivation from…

Etymology from Wiktionary, CC BY-SA 3.0