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

 

cygnet

 noun
noun
BrE BrE//ˈsɪɡnət//
 
; NAmE NAmE//ˈsɪɡnət//
 
Birds
 
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a young swan (= a large white bird with a long neck that lives on or near water) See related entries: Birds Word Origin late Middle English: from Anglo-Norman French cignet, diminutive of Old French cigne ‘swan’, based on Latin cycnus, from Greek kuknos.
See the Oxford Advanced American Dictionary entry: cygnet