yellow

To look yellow ; to be jealous.
I happened to call on Mr. Green, who was out: on coming home, and finding me with his wife, he began to look confounded blue, and was, I thought, a little yellow.
yellow belly

A native of the Fens of Licoinshire ; an allusion to the eels caught there.
yellow boys

Guineas.

The 1811 Dictionary of the Vulgar Tongue.