a lodging for soldiers in a garrison town; barracks.
Also, ca⋅serne.
Origin: 1690–1700; < F caserne, orig. small room for guardsmen < OPr cazerna foursome < L quaterna, neut. pl. of quaternī four at a time, equiv. to quater- (deriv. of quattuorfour) + -nī distributive suffix
ca·sern also ca·serne (kə-zûrn') n. A military barracks or garrison.
[French caserne, from Old French, small room for the night watch, from Old Provençal cazerna, group of four men, from Latin quaterna, four together, from Latin quaternī, by four; see quaternion.]