A person responsible for patrolling an area deemed to be at risk from air raids, enforcing blackout regulations, and dealing with fires and injuries caused by bombs.
Origin
1930s; earliest use found in The Times.
Definition of air raid warden in US English:
air raid warden
noun
A person responsible for patrolling an area deemed to be at risk from air raids, enforcing blackout regulations, and dealing with fires and injuries caused by bombs.