trefoil

/ˈtrɛfɔɪl/
noun
  1. A plant with leaves divided into three small leaflets, such as clover.
    • The field was covered in green trefoil, perfect for grazing sheep.
    • Trefoil is often used as a symbol of luck because of its resemblance to a shamrock.
    • She pressed a dried trefoil between the pages of her book.
  2. A decorative design or shape with three rounded lobes, often used in architecture and heraldry.
    • The old cathedral's windows featured a beautiful trefoil pattern.
    • The knight's shield was painted with a golden trefoil on a blue background.
    • She carved a trefoil into the wooden door frame as a decorative touch.
Synonyms
What does "trefoil" mean? | whatsthatwordmean | whatsthatwordmean