tephra /tefˈrə/

Ash and debris ejected by a volcano

• air lieutenants
• airlift
• airlifted
• airlifting
• airlifts
• airline
• airliner
• airliners
• airlines
• air loadmaster
• air loadmasters
• airlock
• airlocks
• airmail
• airmailed
• airmailing
• airmails
• airman
• airmanship
• airmanships
• air-marshal
• air mass
• air masses
• air-mechanic
• air-mechanics