[Perh. an application of BRANKS1 in the sense of a gag; but cf. BRANCHUS and BRANCOS.] The mumps.

1

1794–6.  E. Darwin, Zoon. (1802), III. 365. Mumps, or branks, is a contagious inflammation of the parotis.

2

1860.  Ramsay, Remin., v. (ed. 18), 115. I’ve had … the branks.

3