airhead

/ˈɛrˌhɛd/
noun
  1. A silly or unintelligent person; someone who is not very bright.
    • Don't be such an airhead — you forgot your keys again!
    • The movie character is a classic airhead who always gets into trouble.
    • He's a bit of an airhead, but he has a good heart.
  2. In military use, a base or area secured by airborne troops for receiving supplies and reinforcements.
    • Securing the airhead was critical for the success of the operation.
    • Supplies were flown into the airhead under cover of darkness.
    • The paratroopers established an airhead behind enemy lines.
Antonyms
What does "airhead" mean? | whatsthatwordmean | whatsthatwordmean