smallpox

/ˈsmɔːlˌpɒks/
noun
  1. A serious infectious disease that causes fever and a rash of raised bumps that leave scars. It has been eradicated worldwide through vaccination.
    • Doctors no longer need to treat smallpox because it no longer exists in nature.
    • Smallpox was one of the deadliest diseases in human history.
    • The smallpox vaccine helped wipe out the disease completely.