Meaning

noun any of numerous fruits of the gourd family having a hard rind and sweet juicy flesh

noun any of various fruit of cucurbitaceous vines including: muskmelons; watermelons; cantaloupes; cucumbers

originFrom Middle English meloun, melon, from Old French melon, from Late Latin melonem, from Latin melopeponem, from Ancient Greek μηλοπέπων (mēlopépōn), from μῆλον (mêlon, “apple”) + πέπων (pépōn, “ripe”).

Etymology from Wiktionary, CC BY-SA 3.0