sə̇ˈlastrəs noun
Usage: capitalized
Etymology: New Latin, from Greek kēlastros holly
: a genus (the type of the family Celastraceae) of woody vines and erect shrubs native chiefly to Asia and Australia and having alternate deciduous leaves, flowers in panicles or racemes, and fruit a 3-valved orange or yellow capsule — see bittersweet