trefoil knot

== English == === Etymology === From trefoil +‎ knot, from being a knot theory knot, where its simplest symmetrical configuration appears like a trefoil. === Noun === trefoil knot (plural trefoil knots) (topology) A knot formed by joining the two loose ends of a overhand knot to form a knotted loop; the simplest non-trivial knot. ==== Translations ==== ==== See also ==== triquetra