bitter melon

noun4

1. •
   A vine, Momordica charantia, which produces a bitter yet edible fruit.

   • Bees often convey the pollen from the blossoms of a bitter melon vine to those of a sweet variety and completely change the character and flavor of its fruit. — 1896
2. •
   The fruit of the bitter melon vine.
3. •
   The colocynth, Citrullus colocynthis.
4. •
   (Australia) A similar fruit-bearing vine, Citrullus lanatus (Citroides Group).