colocynth

/kɒl.əˈsɪnθ/

IPA: /K AH0 L OW1 S IH1 N TH/

noun
  1. 1

    A viny plant, Citrullus colocynthis, native to the Mediterranean Basin and Asia. It produces a lemon-sized, yellowish, green-mottled, spongy, and extremely bitter fruit.

  2. 2

    The powdered pulp of this fruit, a powerful hepatic stimulant and hydragogue cathartic used as a strong laxative.

Source: https://en.wiktionary.org/wiki/colocynth