Meaning oftrefoilin English

Noun

1. a plant with trifoliate leaves; pea family
   The gardener planted a trefoil in the backyard garden.
2. a symbol shaped like trifoliate leaves; architectural ornament
   Architects often use the trefoil symbol in Gothic designs.
3. a knotted loop formed by joining loose ends
   The rock climber created a trefoil to secure the rope ends.