Where does “starbeam” come from?

starbeam (English) comes from English star, from Middle English sterre, from Old English steorra, from Proto-West Germanic sterrō, from Proto-Germanic sternô, from Proto-Indo-European h₂stḗr, from Proto-Indo-European h₂eHs- — to be/become dry; to burn, to glow; hearth.

starbeam (English): A ray or set of rays of starlight (light emitted from a star); especially, an intense and visible one, as revealed for example by its diffraction among dust particles

Definitions

  1. A ray or set of rays of starlight (light emitted from a star); especially, an intense and visible one, as revealed for example by its diffraction among dust particles

Ancestry of “starbeam”, step by step

starbeam traces back through two separate lines of ancestry.

via English star

StepLanguageWordMeaning
1EnglishstarAny small luminous dot appearing in the cloudless...
2Middle Englishsterrestar
3Old Englishsteorrastar
4Proto-West Germanicsterrō
5Proto-Germanicsternôstar
6Proto-Indo-Europeanh₂stḗrstar
7Proto-Indo-Europeanh₂eHs-to be/become dry; to burn, to glow; hearth

via English beam

StepLanguageWordMeaning
1EnglishbeamAny large piece of timber or iron long in...
2Middle EnglishbeemA usually wooden beam or pole
3Old Englishbēamtree, cross, gallows, column, pillar, wood, beam,...
4Proto-West Germanicbaumtree; beam
5Proto-GermanicbaumazAlternative form of *bagmaz; tree, beam, balk;...
6Proto-Indo-Europeanbʰew-to grow, swell; to swell, wax, grow; to blow; to...
Every word from Proto-Indo-European h₂eHs-Every word from Proto-Indo-European h₂stḗrEvery word from Proto-Germanic sternô