garrison

Noun

Middle English garisoun "wealth, gift, tribute, protection, fortified place, body of soldiers," borrowed from Anglo-French garisun "protection, cure, income, supplies," from garir "to support, protect, cure" (going back to Old Low Franconian *warjan "to defend, prevent," going back to Germanic *warjan-) + -isun, deverbal noun suffix, going back to Latin -ītiōn-, -ītiō, from -ī-, verb stem formative + -tiōn-, -tiō, suffix of verbal action — more at weir

Note: The Middle English sense "fortified place, body of soldiers" reflects confusion with Middle English garnisoun and Anglo-French garnisun "fortified place, body of armed men stationed in such a place," from Anglo-French garnir "to give notice, equip, arm, fortify" (see garnish entry 1) + the same suffix seen in garisun.

Verb

derivative of garrison entry 1