bunker
A hardened shelter, often partly buried or fully underground, designed to protect the inhabitants from falling bombs or other attacks.
Example
“The military built a bunker to help evacuate the citizens safely from the bombings.”
Other meanings
A compartment for storing coal for the ship's boilers; or a tank for storing fuel oil for the ship's engines.
The coal compartment on a tank engine; it can also refer to that on a tender engine.
Word history
From Old Norse "bunki" (a heap).
Where this comes from
This definition is adapted from “bunker” on Wiktionary, by its contributors, published under CC BY-SA 4.0. This page is published under the same licence.