- A chest for valuables - Strongbox for valuables - A casket, chest, or trunk; especially, one used for keeping
money or other valuables. - Fig.: Treasure or funds; -- usually in the plural. - A panel deeply recessed in the ceiling of a vault, dome, or
portico; a caisson. - A trench dug in the bottom of a dry moat, and extending
across it, to enable the besieged to defend it by a raking fire. - The chamber of a canal lock; also, a caisson or a
cofferdam.