Cucumber (noun)

1. A long, cylindrical fruit with a green skin, white flesh, and watery juice, usually eaten raw in salads.
2. A person who is not alert or aware of their surroundings.

Origin:

Origin: late middle english: from old french cocombre, from latin cucumis, cucumer-.

Examples:

1. She sliced up a cucumber for the salad.
2. The cucumber was fresh and crisp.
3. He wandered through the crowded market like a cucumber.