canteen

Short definition from Wiktionary

Noun

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