An empty bottle: so called at the university of Cambridge, where fellow commoners are not in general considered as over full of learning. At Oxford an empty bottle is called a gentleman commoner for the same reason. They pay at Cambridge 250l. a year for the privilege of wearing a gold or silver tassel to their caps. The younger branches of the nobility have the privilege of wearing a hat, and from thence are denominated HAT FELLOW COMMONERS.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
Feint * FenNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes