Where does “tréimse” come from?

tréimse (Old Irish) comes from Old Irish trí, from Proto-Celtic trīs, from Proto-Indo-European *tréyes.

Ancestry of “tréimse”, step by step

StepLanguageWordMeaning
1Old Irishtríthree
2Proto-Celtictrīsthree
3Proto-Indo-European*tréyes—

Words derived from “tréimse”

Every word from Proto-Indo-European *tréyes →Every word from Proto-Celtic trīs →Every word from Old Irish trí →