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

 

oregano

 noun
noun
BrE BrE//ˌɒrɪˈɡɑːnəʊ//
 
; NAmE NAmE//əˈreɡənoʊ//
 
[uncountable] Herbs and spices
 
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a plant with leaves that have a sweet smell and are used in cooking as a herb See related entries: Herbs and spices Word Origin late 18th cent.: from Spanish, variant of origanum, from Greek origanon, perhaps from oros ‘mountain’ + ganos ‘brightness’.
See the Oxford Advanced American Dictionary entry: oregano