Out of use, To nab the rust; to be refractory; properly applied to a restive horse, and figuratively to the human species. To ride rusty; to be sullen; called also to ride grub.
–From the 1811 Dictionary of the Vulgar Tongue.
One of those words that sounds more modern than it is.
He was in his birth-day suit, that is, stark naked.
–From the 1811 Dictionary of the Vulgar Tongue.
Couldn’t get away from those birthday suits in Regency times either!
Rogues of the same gang.
–From the 1811 Dictionary of the Vulgar Tongue.
Those birds have been around for a while.
Gold. A mint of money; common phrase for a large sum.
–From the 1811 Dictionary of the Vulgar Tongue.
An opening, or means of escape. To find a loophole in an act of parliament; i.e. a method of evading it.
–From the 1811 Dictionary of the Vulgar Tongue.
This word goes in the “this word was used back then?” category.
A slovenly fop; one finely dressed, but dirty.
–From the 1811 Dictionary of the Vulgar Tongue.
Seriously…it’s in the dictionary as a phrase used then…I’m not making this stuff up…
A little dapper fellow. A child. The blowen has napped the kid. The girl is with child.
The word kid is not anachronistic to the time period. 
