Common Name: 

About 170 species of deciduous and evergreen erect or scrambling shrubs and small trees, usually with 4-sided branches.  Leaves are simple, opposite, rarely alternate, entire or serrate, glabrous.  Flowers are small and inconspicuous.  Fruit is a capsule.  Native to Asia, Europe, North and Central America, Madagascar and Australia.
Euonymus: the classical Greek name for the plant.  (Bad joke: There was controversy over what to name this plant so they voted, and since they all agreed, it was "euonymus"!).

Celastraceae (Spindle Family)