Meaning

noun weapons considered collectively

noun military supplies

noun defensive structure consisting of walls or mounds built around a stronghold to strengthen it

originFrom Latin mūnitiō (“a defence, fortification”) via French munition, from mūnīre (“fortify, defend (with a wall)”) + -tiō, from moenia (“city walls, defensive walls, or walls in general”). Equivalent to munite + -ion.

Etymology from Wiktionary, CC BY-SA 3.0