lilac

nouns

any of various plants of the genus Syringa having large panicles of usually fragrant flowers
lilac
is a member of
genus of Old World shrubs or low trees having fragrant flowers in showy panicles: lilacs
Syringa, genus Syringa
is a type of (narrower)
a low woody perennial plant usually having several major stems
bush, shrub

adjectives

of a pale purple color
lavender, lilac, lilac-colored