from
The Collaborative International Dictionary of English v.0.48
Mumps \Mumps\, n. [Prov. E. mump to be sulky. Cf. {Mump},
{Mumble}, and {Mum}.]
1. pl. Sullenness; silent displeasure; the sulks. --Skinner.
[1913 Webster]
2. [Prob. so called from the patient's appearance.] (Med.) A
specific infectious febrile disorder characterized by a
nonsuppurative inflammation of the parotid glands, and
sometimes causing inflammation of the testes or ovaries;
also called {epidemic parotitis} or {infectious
parotitis}. It is caused by infection with a
paramyxovirus.
[1913 Webster +PJC]