1) Bush 2) Shrub 1) Syringa 
Philadelphus, s) (mock-orange) is a genus of about 60 species of shrubs from 1 to 6 m tall, native to North America, Central America, Asia and (locally) in southeast Europe. They are named `mock-orange` in reference to their flowers, which in wild species look somewhat similar to those of oranges and lemons (Citrus) at first glance, and smell of.....
genus of deciduous shrubs of the family Hydrangeaceae, including the popular garden forms commonly known as mock orange (from its characteristic ... [2 related articles]
[n] - any of various chiefly deciduous ornamental shrubs of the genus Philadelphus having white sweet-scented flowers, single or in clusters
philadelphus Loving one's brother.
noun any of various chiefly deciduous ornamental shrubs of the genus Philadelphus having white sweet-scented flowers, single or in clusters; widely grown in temperate regions