Caisson
01
ケーソン, 防水室
large watertight chamber used for construction under water
02
カッソン, 埋め込みパネル
a decorative or structural element with recessed panels, commonly found in ceilings, adding visual interest to the space
03
弾薬箱, 弾薬の胸
a chest to hold ammunition
04
砲弾運搬車
a two-wheeled military vehicle carrying artillery ammunition
