• WordNet 3.6
    • n Thevetia genus of poisonous tropical American evergreen shrubs and trees having entire leaves and large cymose flowers
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Century Dictionary and Cyclopedia
    • n thevetia A genus of plants, of the order Apocynaceæ, tribe Plumerieæ, and subtribe Cerbereæ. It is characterized by a glandular calyx and a funnel-shaped corolla with its lobes sinistrorsely overlapping. There are about 4 species, natives of tropical Asia, Madagascar, and the islands of the Pacific. They are smooth shrubs or small trees, with alternate leaves, and large yellow flowers in terminal cymes. For T. neriifolia, commonly cultivated in tropical America as a garden shrub or for hedges, see quashy-quasher.
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In literature:

And it proved to be Thevetia neriifolia, and a very deadly poison.
"At Last" by Charles Kingsley