(n): sheet that forms a distinct (usually flat and rectangular) section or component of something
(n): a two-wheeled military vehicle carrying artillery ammunition
(n): vehicle used by the armed forces
(n): a chest to hold ammunition
(n): box with a lid; used for storage; usually large and sturdy
(n): large watertight chamber used for construction under water
(n): a natural or artificial enclosed space
It goes rolling along.