1. Below the dura mater but above the arachnoid membrane of the meninges

See also: dura mater

• airfoil
• airforce
• airframe
• airfreight
• airgun
• airhead
• airheaded
• airily
• airiness
• airing
• airing cupboard
• airless
• airlift
• airlike
• airline
• airline business
• airliner
• airlock
• airmail
• airmail letter
• airmailer
• airman
• airmanship
• airpark
• airplane