measle

/ˈmizəl/
noun
  1. A single spot or lesion caused by the measles virus, or a similar spot on a plant or animal.
    • Each measle on the pig's skin indicated a case of the disease.
    • The rose bush had a strange measle on one of its leaves.
    • The doctor pointed to a small measle on the child's arm as a sign of the illness.