The Collaborative International Dictionary
potteen
Poteen \Po*teen"\, Potheen \Po*theen"\, n. [Ir. poitin a small pot, whisky made in private stills; cf. pota pot, fr. E. pot.] Whisky; especially whisky distilled in a small way privately or illicitly by the Irish peasantry. [Written also potteen.]
Wiktionary
potteen
n. (alternative form of poteen English)