# trefoil knot

> English word · Noun

## Definitions
1. A knot formed by joining the two loose ends of a overhand knot to form a knotted loop; the simplest non-trivial knot.

## Etymology
From trefoil + knot, from being a knot theory knot, where its simplest symmetrical configuration appears like a trefoil.
File:Trefoil-non-3-symm.svg|A trefoil knot lacking three-fold symmetry
File:Tricoloring.png|The trefoil knot with each lobe highlighted
File:Trefoil Knot.gif|Trefoil knot

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/trefoil-knot