A kestrel in flight.Licensed from iStockPhoto
- either of two small, reddish-gray European falcons (Falco tinnunculus or F. naumanni) that can hover in the air
- American kestrel
Origin: Middle English castrel from Old French cresserelle, quercerelle: origin, originally echoic
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Origin: Probably from obsolete French cresserelle, from Old French cresserele, probably from cresselle, clacker, kestrel.