Measles

noun

1. Rubeola, an acute highly contagious disease, often of childhood, caused by Measles virus, of genus Morbillivirus, featuring a spreading red skin rash, fever, runny nose, cough and red eyes
2. Any of several other similar diseases, such as German measles.
3. A disease of pigs and cattle, caused by larval tapeworms.
4. A disease of trees, in which the leaves are covered in spots.