- any of various shrubs belonging to the genus Philadelphus, of the saxifrage family, especially P. coronarius, a widely cultivated species having fragrant white flowers.
- any of various other shrubs or trees having flowers or fruit resembling those of the orange, as the laurel cherry.
- any shrub of the genus Philadelphus, esp P. coronarius, with white fragrant flowers that resemble those of the orange: family Philadelphaceae
- any other shrub or tree that resembles the orange tree
