English
airbeam
From air + beam.
Proto-Indo-European *bʰew- ‘to grow, swell’
Proto-Germanic *baumaz ‘tree, beam, balk’
Proto-West Germanic *baum ‘tree’
Old English bēam ‘tree, cross, gallows, column, pillar, wood,…’
Middle English bem ‘a beam’
English beam
Today it means
noun A support element for a lightweight structure such as a tent consisting of an inflatable tube or similar length of material given shape by being filled with air.
Language periods are conventional ranges, not dates for this word.
Etymograph / airbeam