Where does “trillawr” come from?

trillawr (Welsh) comes from Welsh llawr, from Proto-Brythonic llọr, from Proto-Celtic ɸlārom, from Proto-Indo-European pleh₂ros, from Proto-Indo-European pleh₂- — flat.

trillawr (Welsh): three-storey, triple-decker

Definitions

  1. three-storey, triple-decker

Ancestry of “trillawr”, step by step

trillawr traces back through two separate lines of ancestry.

via Welsh llawr

StepLanguageWordMeaning
1Welshllawrfloor, ground; earth; storey
2Proto-Brythonicllọrfloor
3Proto-Celticɸlāromfloor
4Proto-Indo-Europeanpleh₂rosflat; floor
5Proto-Indo-Europeanpleh₂-flat

via Welsh tri

StepLanguageWordMeaning
1Welshtrithree
2Proto-Brythonictrithree
3Proto-Celtictrīsthree
4Proto-Indo-European*tréyes—
Every word from Proto-Indo-European pleh₂- →Every word from Proto-Indo-European pleh₂ros →Every word from Proto-Celtic ɸlārom →
trillawr — Etymology, Origin & Word History | Etymology Explorer