(A). A gold sovereign.
“John did not starve the cause: there wanted not yellow-boys to fee
(A). A bankrupt. The French call a bankrupt Safranier, and Aller au safran means to be made a bankrupt. The allusion is to the ancient custom of painting the house of a traitor yellow. It will be remembered that the house of the Petit Bourbon was long so stigmatised on account of the treason of the Constable Bourbon.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894