BLOSS,
a Shop-lifter; also a Bully's pretended Wife, or Mistress, whom he guards, while she supports him; also a Whore.
· 
· 
Entry taken from 1736 Canting Dictionary, by Nathan Bailey.
· ·
Bloss in the 1811 Vulgar Tongue
Also see examples in Canting Songs and Slang Rhymes collected by John S. Farmer (1896).