po·ta·tion 
(pō-tāshən)
(pō-tāshən)n.
1. The act of drinking.
2. A drink, especially of an alcoholic beverage.
[Middle English potacion, from Old French, from Latin pōtātiō, pōtātiōn-, a drinking party, from pōtātus, past participle of pōtāre, to drink, from pōtus, a drink; see pō(i)- in the Appendix of Indo-European roots.]