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1. Restaurant for people at an institution (factory, school, business, etc)
    
2. A flask for carrying water; used by soldiers or travellers
    
3. Sells food and personal items to personnel at an institution, school or camp etc.
    
4. A restaurant outside; often for soldiers or policemen
   - mobile canteen
    
5. A recreation room in an institution
    
6. [Brit] A box for storing cutlery

Derived forms: canteens

Type of: eatery, eating house, eating place, flask, rec room [N. Amer, informal], recreation room, restaurant, shop, store

Encyclopedia: Canteen