Where does “tree filley” come from?

tree filley (Manx) comes from Manx tree-, from Manx three, from Manx tree, from Old Irish trí, from Proto-Celtic trīs, from Proto-Indo-European *tréyes.

tree filley (Manx): threefold, triple; three-ply

Definitions

  1. threefold, triple; three-ply

Ancestry of “tree filley”, step by step

StepLanguageWordMeaning
1Manxtree-tri-
2ManxthreeAlternative spelling of tree
3Manxtreethree
4Old Irishtríthree
5Proto-Celtictrīsthree
6Proto-Indo-European*tréyes—
Every word from Proto-Indo-European *tréyes →Every word from Proto-Celtic trīs →Every word from Old Irish trí →