tansy

/ˈtænzi/
noun
  1. A strong-smelling plant with yellow flowers, often used in traditional medicine or as a natural insect repellent.
    • The hiker recognized the bitter scent of tansy along the trail.
    • Some people use dried tansy leaves in potpourri for their sharp, camphor-like fragrance.
    • Grandma grew tansy in her herb garden to keep ants away from the kitchen.