winter melon

Short definition from Wiktionary

Noun

1. 1
   Benincasa hispida, a species of the gourd family (Cucurbitaceae) commonly cultivated in Asia.
2. 2
   Any late-maturing variety of true melon (Cucumis melo), such as honeydew melon (Inodorus Group), Cassaba melon (Cassaba Group), and Spanish melon (Ibericus Group).
3. 3
   A type of watermelon (Citrullus lanatus).