[gar.ri.son] n [ME garisoun protection, fr. OF garison, fr. garir to protect, of Gmc origin; akin to OHG werien to defend--more at weir] (15c) 1: a military post; esp: a permanent military installation
2: the troops stationed at a garrison
[2]garrison vt gar.ri.soned ; gar.ri.son.ing (1569) 1: to station troops in
2. a: to assign as a garrison b: to occupy with troops