Definition of thoroughbred noun from the Oxford Advanced American Dictionary

 

thoroughbred

 noun
noun
NAmE//ˈθəroʊˌbrɛd//
 
, NAmE//ˈθərəˌbrɛd//
 
 
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an animal, especially a horse, of high quality, that has parents that are both of the same breed
thoroughbredadjective
 
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a thoroughbred mare