Where does “trefoil” come from?

Trefoil comes from Middle English trefoil, from Old French trifoil, from Latin trifolium, a compound of Latin tri- (three) and folium (leaf), ultimately from Proto-Indo-European bʰel- (to swell or bloom).

trefoil (English): Any of several plants of the pea family, having...

Definitions

  1. Any of several plants of the pea family, having...

Ancestry of “trefoil”, step by step

StepLanguageWordMeaning
1Middle Englishtrefoil—
2Old Frenchtrifoiltrefoil
3Latintrifoliumtrefoil, clover
4Latinfoliuma leaf; a petal; a sheet or leaf of paper
5Proto-Italic*foljom—
6Proto-Indo-Europeanbʰolh₃yomleaf
7Proto-Indo-Europeanbʰleh₃-bloom, flower
8Proto-Indo-Europeanbʰel-to sound; to speak, roar, bark; shiny, white; to...
9Proto-Indo-Europeanbʰōl-—

Words derived from “trefoil”

Every word from Proto-Indo-European bʰōl- →Every word from Proto-Indo-European bʰel- →Every word from Proto-Indo-European bʰleh₃- →