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

 

guinea

 noun
noun
BrE BrE//ˈɡɪni//
 
; NAmE NAmE//ˈɡɪni//
 
 
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an old British gold coin or unit of money worth 21 shillings (= now £1.05). Prices are sometimes still given in guineas, for example when buying or selling horses. Word Originnamed after Guinea in West Africa.