trefoil knot

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English

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A trefoil knot.
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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)

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

See also