canteen

1. A water bottle, flask, or other vessel, typically used by a soldier or camper as a bottle for carrying water or liquor for drink.
2. A military mess kit.
3. A box with compartments for storing eating utensils, silverware etc.
4. A temporary or mobile café used in an emergency or on a film location etc.
5. A small cafeteria or snack bar, especially one in a military establishment, school, or place of work. · He ordered a salad at the canteen.
6. A cafeteria in a school or place of work.
7. Goods purchased from a prison canteen.

Plural canteens