A gardenia is a type of large, white, or yellow flower with a very pleasant smell. A gardenia is also the bush on which these flowers grow.
gardenia in British English
(ɡɑːˈdiːnɪə)
noun
1.
any evergreen shrub or tree of the Old World tropical rubiaceous genus Gardenia, cultivated for their large fragrant waxlike typically white flowers
2.
the flower of any of these shrubs
Word origin
C18: New Latin, named after Dr Alexander Garden (1730–91), American botanist
gardenia in American English
(gɑrˈdinjə; gɑrˈdiniə)
US
noun
any of a genus (Gardenia) of chiefly subtropical Old World plants of the madder family, with glossy leaves and highly fragrant, white or yellow, waxy flowers