1. obsolete a small cupboard or other storage space, pantry
2. Ecclesiastical a recess in the wall of a church or a cupboard in the sacristy where sacred vessels, books, vestments, etc., are kept
Etylmology
C14: from Old French almarie, from Medieval Latin almārium, from Latin armārium chest for storage, from arma arms
In lieu of usage, I bring you a variety of images: