subsellium /sub-selˈi-əm/

1. A seat in a Roman amphitheatre
2. A misericord

• airmails
• airman
• airmanship
• airmanships
• air-marshal
• air mass
• air masses
• air-mechanic
• air-mechanics
• airmen
• air mile
• air miles
• air-minded
• air miss
• airn
• air-officer
• air-officers
• air-passage
• air-passages
• air-piracies
• air-piracy
• air pistol
• air pistols
• airplane
• airplanes