What is another word for blast shelter?
Pronunciation: [blˈast ʃˈɛltə] (IPA) 
A blast shelter is a structure designed to protect inhabitants from the effects of a nuclear explosion or other types of blasts. Synonyms for this term include fallout shelter, bomb shelter, and underground bunker. Fallout shelter refers to a shelter designed to protect against radioactive debris that can result from a nuclear explosion. Bomb shelter is a broad term that refers to any structure designed to protect against bombs and missiles. Underground bunker is often used to describe a reinforced underground structure used for military purposes or as a safe haven for high-ranking officials in times of crisis. Regardless of the term used, the purpose of a blast shelter remains the same - to protect lives.
