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

 

yellowhammer

 noun
noun
BrE BrE//ˈjeləʊhæmə(r)//
 
; NAmE NAmE//ˈjeloʊhæmər//
 
Birds
 
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a small bird, the male of which has a yellow head, neck and breast See related entries: Birds Word Origin mid 16th cent.: -hammer is perhaps from Old English amore (a kind of bird), possibly conflated with hama ‘feathers’.