Answer: caisson

AnswerCrossword Clue
CAISSON

Underwater chamber.

CAISSON

Ammo wagon

CAISSON

Structure for underwater construction

CAISSON
Ammunition container
CAISSON
Airtight underwater chamber
CAISSONAmmunition carrier on wheels
CAISSONAmmunition wagon
CAISSONWatertight chamber
CAISSONEnclosure for a sandhog
CAISSONCofferdam's cousin.
CAISSONAmmunition chest.
CAISSONWatertight structure
CAISSONArmy wagon.
CAISSONWhere a sand hog works.
CAISSONAmmo wagon.
CAISSONAmmunition wagon.
CAISSONMilitary funeral carriage
CAISSONPlace for ammunition
CAISSON"Rolling along" item in an Army song
CAISSONArtillery wagon
CAISSONTunnel worker's chamber
CAISSONAmmunition chest