Present participle of accouter; the act of equipping or outfitting someone with gear or clothing.
From accouter + -ing. The -ing form creates a gerund or present participle, describing the ongoing action of equipping.
The -ing form is surprisingly common in historical narratives: 'The soldiers were accoutering themselves' creates a vivid scene of preparation before battle.
Complete word intelligence in one call. Free tier — 50 lookups/day.