nounDownload🔗ShareAny of several plants of the pea family, having compound, trifoliate leaves; especially one of the genus Trifolium.Examples:"The Girl Scout logo features a trefoil symbolizing the organization's three-part promise. "plantbiologynaturevegetableChat with AIVocabulary GamePractice Reading
nounDownload🔗ShareA symbol having the shape of such leaves, especially when used as an architectural ornament.Examples:"The school's new building featured a beautiful trefoil design in the archways. "architectureartbuildingChat with AIVocabulary GamePractice Reading
nounDownload🔗ShareA knot formed by joining the two loose ends of a overhand knot to form a knotted loop; the simplest non-trivial knot.Examples:"The child practiced tying a trefoil with the shoelace to make a decorative knot. "mathstructureChat with AIVocabulary GamePractice Reading