A sham collar, to be worn over a dirty shirt.

–From the 1811 Dictionary of the Vulgar Tongue.

Random trivia, since this made me think of it – the etymology of the word dickey is given as 1807.

Anxious, eager, impatient: from the Italian AGOGARE, to desire eagerly.

–From the 1811 Dictionary of the Vulgar Tongue.

To speak through the nose, to snuffle.

-From the 1811 Dictionary of the Vulgar Tongue.

The nose of a man or woman.

-From the 1811 Dictionary of the Vulgar Tongue.