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

 

gardenia

 noun
noun
BrE BrE//ɡɑːˈdiːniə//
 
; NAmE NAmE//ɡɑːrˈdiːniə//
 
 
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a bush with shiny leaves and large white or yellow flowers with a sweet smell, also called gardenias Word Originmodern Latin, named in honour of Dr Alexander Garden (1730–91), Scottish naturalist.
See the Oxford Advanced American Dictionary entry: gardenia