Entry 2 senses · 2 variants Webster, 1913 Poteen · Po·teen · IPA /pəˈtiːn/ n. n. 01 n. Whisky; especially whisky distilled in a small way privately or illicitly by the Irish peasantry. 1. Whisky; especially whisky distilled in a small way privately or illicitly by the Irish peasantry. 02 n. especially, whisky illicitly distilled by the Irish peasantry. 1. especially, whisky illicitly distilled by the Irish peasantry.