Green’s Dictionary of Slang

1. a beer-seller.

1560		Becon Works (Parker Soc.) 276: Good wife pint-pot [F&H].
c.1597		Shakespeare Henry IV Pt 1 II iv: Peace, good pint-pot! peace, good tickle-brain!

2. (Aus.) a tin can, holding a pint, which is used for boiling water.

1941

K. Tennant Battlers 94: Then pass the billy round, boys, don’t let the pint pot stand.

3. (US) a drunk.

1944

Maurer & Baker ‘“Aus.” Rhyming Argot’ in AS XIX:3.