Watermelon (noun)

1. A large, round or oblong fruit with a hard, green or yellow rind and a sweet, juicy, usually pink or red interior.
2. A plant that produces watermelons.

Origin:

The word watermelon comes from the late middle english word watermeloun, which is derived from the old french word 'watermeloun', which in turn comes from the medieval latin word 'aqua melonem', meaning 'water apple'.

Examples:

1. She sliced the watermelon into pieces and shared it with her friends at the picnic.
2. The watermelon plants in his garden were flourishing this summer.
3. She loved to eat watermelon on a hot summer day.
4. The farmer was proud of the watermelons he had grown and was selling at the market.
5. Watermelon is a great source of hydration during the summer season.