noun / verb
bunker
BUHNG-ker/ˈbʌŋkər/
A fortified shelter or taking shelter defensively.
The concrete bunker has thick walls and a heavy steel door.
Etymology
Bunker first meant a seat or bench in Scottish usage; its deeper origin is uncertain. The later sense “dug-out fortification” directly connects it with today's reinforced protective shelter.
In context
Each bunker is reinforced with layers of thick concrete to ensure blast protection, advanced air filtration systems, and rooms that enhance safety.
More examples
- Soldiers wait inside the bunker until the shelling stops.
- The hillside contains several bunkers connected by narrow tunnels.
- We bunker down in the basement when the sirens sound.
Forms
bunker · bunkers · bunkered · bunkering
fortification noun — A structure built for military defense.
Similar words
- shelter
- Shelter is broader and need not be reinforced or military.
- dugout
- A dugout is dug into earth and may lack reinforcement.