1. a plant with leaves divided into three leaflets, especially clover
2. an ornamental design or symbol with three lobes or leaves
Usage: architecture; heraldry

Examples

• The meadow was covered with white trefoil flowers.
• Cattle grazed on the trefoil growing in the pasture.
• The Gothic window featured a beautiful trefoil design at the top.
• The family crest displayed a golden trefoil on a blue background.
• She picked a handful of trefoil to add to her wildflower bouquet.
• The stone carving showed an intricate trefoil pattern.
• Red trefoil bloomed along the roadside in early summer.