Where does “grainfall” come from?

grainfall (English) comes from English fall, from Middle English fall, from Old English feall, from Proto-Germanic fallą, from Proto-Indo-European (s)pōl- — to fall.

grainfall (English): The accumulation of (typically sand) grains to form a dune

Definitions

  1. The accumulation of (typically sand) grains to form a dune

Ancestry of “grainfall”, step by step

grainfall traces back through two separate lines of ancestry.

via English fall

StepLanguageWordMeaning
1Englishfall"To be moved downwards."; "To move downwards.";...
2Middle Englishfall—
3Old EnglishfeallAlternative form of fiell
4Proto-Germanicfallą—
5Proto-Indo-European(s)pōl-to fall

via English grain

StepLanguageWordMeaning
1EnglishgrainThe harvested seeds of various grass food crops...
2Middle EnglishgraynA forking channel or pass; a fjord or estuary;...
3Old Norsegreinbranch; point, head, part; cause, reason
4Proto-Germanicgrainō—
Every word from Proto-Indo-European (s)pōl- →Every word from Proto-Germanic fallą →Every word from Old English feall →