Source : Webster's Revised Unabridged Dictionary (1913)

Poteen \Po*teen"\, Potheen \Po*theen"\, n. [Ir. poitin a small
   pot, whisky made in private stills; cf. pota pot, fr. E.
   pot.]
   Whisky distilled in a small way privately or illicitly by the
   Irish peasantry.

Potheen \Po*theen"\, n.
   See {Poteen}.