colocynth

[ kol-uh-sinth ]
/ ˈkɒl ə sɪnθ /

noun

a plant, Citrullus colocynthis, belonging to the gourd family, of the warmer parts of Asia, the Mediterranean region, etc., bearing a round, yellow or green fruit with a bitter pulp.
the fruit of this plant.
Pharmacology. the drug derived from the pulp of the unripe but full-grown fruit of this plant, used in medicine chiefly as a purgative.

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Question 1 of 7
This tall, horizontally branched cactus is probably the most recognizable cactus in Arizona. What is it called?
Also called bitter apple (for defs. 1, 2).

Origin of colocynth

1555–65; <Latin colocynthis<Greek kolokynthís, variant of kolókyntha bitter gourd, bitter cucumber
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

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British Dictionary definitions for colocynth

colocynth
/ (ˈkɒləsɪnθ) /

noun

a cucurbitaceous climbing plant, Citrullus colocynthis, of the Mediterranean region and Asia, having bitter-tasting fruit
the dried fruit pulp of this plant, used as a strong purgative
German name: bitter apple

Word Origin for colocynth

C17: from Latin colocynthis, from Greek kolokunthis, from kolokunthē gourd, of obscure origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012