sole

noun
  1. The undersurface of a person's foot or of a shoe or sock. It is the part that makes contact with the ground. noun
    She felt a sharp pain in the sole of her foot after walking barefoot all day.
    The shoe's sole was worn out and needed replacing.
  2. The bottom part of a fish, especially a flatfish like the common sole, used as food. noun
    He ordered grilled sole for dinner.
    The market had fresh soles available from local fisheries.
  3. Only; single; exclusive; used to emphasize that there is no other or nothing else. adjective
    She is the sole survivor of the accident.
    This is the sole reason I decided to leave the company.
  4. To be the only one; to have exclusive rights or control over something. verb (less common, used in legal or formal contexts)
    The company sole rights to distribute the product in North America.
    He was sole owner of the property after the inheritance.