Black-nightshade
a common weed, Solanum nigrum, of the nightshade family, having poisonous leaves, white flowers, and black edible berries.
noun
a poisonous solanaceous plant, Solanum nigrum, a common weed in cultivated land, having small white flowers with backward-curved petals and black berry-like fruits
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a tropical American tree, Bucida buceras, having leathery leaves and greenish-yellow flowers.
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Often, black ops. a secret mission or campaign carried out by a military, governmental, or other organization, typically one in which the organization conceals or denies its involvement: Some national intelligence agencies use black ops to undermine enemy governments. The company even resorted to an industrial black op to steal secrets from its competitor.
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a dark variety of opal having the characteristic opaline play of color. noun any opal of a dark coloration, not necessarily black
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