Noah Webster's New International Dictionary of the English Language

1. (n.) A building for soldiers, especially when in garrison. Commonly in the pl., originally meaning temporary huts, but now usually applied to a permanent structure or set of buildings.

2. (n.) A movable roof sliding on four posts, to cover hay, straw, etc.

3. (v. t.) To supply with barracks; to establish in barracks; as, to barrack troops.

4. (v. i.) To live or lodge in barracks.