Definition of kestrel noun from the Oxford Advanced Learner's Dictionary

 

kestrel

 noun
noun
BrE BrE//ˈkestrəl//
 
; NAmE NAmE//ˈkestrəl//
 
Birds
 
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a small bird of prey (= a bird that kills other creatures for food) of the falcon family See related entries: Birds Word Origin late Middle English castrel, perhaps from casserelle, dialect variant of Old French crecerelle, perhaps imitative of its call.
See the Oxford Advanced American Dictionary entry: kestrel