NUMMS,
a sham, or Collar-shirt, to hide the other when dirty.
a sham, or Collar-shirt, to hide the other when dirty.
Entry taken from 1736 Canting Dictionary, by Nathan Bailey.
Numms in the 1811 Vulgar Tongue
Also see examples in Canting Songs and Slang Rhymes collected by John S. Farmer (1896).