air-head

== English == === Alternative forms === airhead === Etymology === From air +‎ head. === Pronunciation === (Received Pronunciation) IPA(key): /ˈɛːhɛd/ (General American) IPA(key): /ˈɛɹˌ(h)ɛd/ === Noun === air-head (plural air-heads) (mining, archaic) A horizontal channel providing ventilation in a mine.