Green’s Dictionary of Slang

1. the throat.

1933

‘William Juniper’ True Drunkard’s Delight 243: The throat, which is also known as [...] common sewer.

2. a drunkard.

1984

Partridge DSUE (8th edn) 246/1: mid C.19–early 20.

3. a drink.

1860		Hotten Dict. of Modern Sl. etc. (2nd edn).
1864, 1867, 1870		Hotten Sl. Dict.
1873		Sl. Dict.