English
aerotrain
From aero- + train.
Proto-Indo-European *h₂ews- ‘dawn’
Proto-Indo-European *h₂ewsér ‘in the direction of dawn, east’
Proto-Hellenic *auhḗr ‘morning mist’
Ancient Greek ἀήρ ‘air’
Ancient Greek ἀέρος
English aero-
Latin trahō ‘to pull, to draw’
…
Vulgar Latin *traginō
Old French trainer ‘to pull out, to draw’
Old French train ‘a delay, a drawing out’
Middle English trayne ‘train’
English train
Today it means
noun A train that is supported on a cushion of air, in the manner of a hovercraft.
Language periods are conventional ranges, not dates for this word.
Etymograph / aerotrain