English
superbeam
From super- + 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 very large or powerful beam (in any sense).
Language periods are conventional ranges, not dates for this word.
Etymograph / superbeam