airhead 1
/air"hed'/ , n.
an area in enemy territory or in threatened friendly territory, seized by airborne troops for bringing in supplies and additional troops by airdrop or landing.
[ AIR 1 + (BEACH)HEAD ]
airhead 2
— airheaded , adj.
/air"hed'/ , n.
Slang. a scatterbrained, stupid, or simple-minded person; dolt.
[ ‡1975-80; AIR 1 + HEAD ]