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