- any evergreen tree or shrub belonging to the genus Gardenia, of the madder family, native to the warmer parts of the Eastern Hemisphere, cultivated for its usually large, fragrant white flowers.
- the flower of any of these plants.
- any evergreen shrub or tree of the Old World tropical rubiaceous genus Gardenia, cultivated for their large fragrant waxlike typically white flowers
- the flower of any of these shrubs
1757, Modern Latin, named for Scottish-born American naturalist Dr. Alexander Garden (1730-1791), Vice President of the Royal Society.