Webster's Revised Unabridged Dictionary · 1913

Accouter

Accouter ({not transcribed}) , transitive verb

[French accouter, Old French accoutrer, accoustrer; à (Latin ad) + perh. Late Latin custor, for custos guardian, sacristan (compare Custody), or perh. akin to English guilt.]

To furnish with dress, or equipments, esp. those for military service; to equip; to attire; to array.
Both accoutered like young men. — Shakespeare
For this, in rags accoutered are they seen. — Dryden
Accoutered with his burden and his staff. — Wordsworth

Also: Accoutre