What is Canteen ?
Canteen is (noun) 1. a self-service restaurant for the people who work in a building such as an office block or factory The food in the office canteen is awful, I prefer to bring my own sandwiches. 2. a box containing knives, forks and spoons As a wedding present they were given a canteen of silver. 3. a bottle for carrying water This is the canteen used by my grandfather during World War I.
source: Easier English, Student Dictionary Upper Intermediate Level