Where does “trefoil knot” come from?

trefoil knot (English) comes from English trefoil, from Middle English trefoil, from Old French trifoil, from Latin trifolium, from Latin folium, from Proto-Italic *foljom, from Proto-Indo-European bʰolh₃yom, from Proto-Indo-European bʰleh₃-.

trefoil knot (English): A knot formed by joining the two loose ends of a...

Definitions

  1. A knot formed by joining the two loose ends of a...

Ancestry of “trefoil knot”, step by step

trefoil knot traces back through two separate lines of ancestry.

via English trefoil

StepLanguageWordMeaning
1EnglishtrefoilAny of several plants of the pea family, having...
2Middle Englishtrefoil
3Old Frenchtrifoiltrefoil
4Latintrifoliumtrefoil, clover
5Latinfoliuma leaf; a petal; a sheet or leaf of paper
6Proto-Italic*foljom
7Proto-Indo-Europeanbʰolh₃yomleaf
8Proto-Indo-Europeanbʰleh₃-bloom, flower
9Proto-Indo-Europeanbʰel-to sound; to speak, roar, bark; shiny, white; to...
10Proto-Indo-Europeanbʰōl-

via English knot

StepLanguageWordMeaning
1EnglishknotA looping of a piece of string or of any other...
2Middle Englishknotteknot, tie; binding, method of attachment, link;...
3Old Englishcnottaknot
4Proto-Germanicknuttôa knot
5Proto-Indo-Europeangnod-to bind
Every word from Proto-Indo-European bʰōl-Every word from Proto-Indo-European bʰel-Every word from Proto-Indo-European bʰleh₃-