Definitions of lilac
  1. noun
    any of various plants of the genus Syringa having large panicles of usually fragrant flowers
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    Himalayan lilac, Syringa emodi
    robust upright shrub of mountains of northern India having oblong-elliptic leaves and pale lilac or white malodorous flowers
    Hungarian lilac, Syringa josikaea, Syringa josikea
    central European upright shrub having elliptic leaves and upright clusters of lilac or deep violet flowers
    Persian lilac, Syringa persica
    small densely branching Asiatic shrub having lanceolate leaves and panicles of fragrant lilac flowers
    Japanese tree lilac, Syringa amurensis japonica, Syringa reticulata
    small tree of Japan having narrow pointed leaves and creamy-white flowers
    Japanese lilac, Syringa villosa
    lilac of northern China having ovate leaves and profuse early summer rose-lilac flowers
    Syringa vulgaris, common lilac
    large European lilac naturalized in North America having heart-shaped ovate leaves and large panicles of highly fragrant lilac or white flowers
    type of:
    bush, shrub
    a low woody perennial plant usually having several major stems
  2. adjective
    of a pale purple color
    synonyms: lavender, lilac-colored
    being or having or characterized by hue
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