Webster's Revised Unabridged Dictionary · 1913

Potable

Potable , adjective

[French, from Latin potabilis, from potare to drink; akin to Greek po`tos a drinking, po`sis a drink, Sanskrit to drink, OIr. ibim I drink. Compare Poison, Bib, Imbibe.]

Fit to be drunk; drinkable.
A potable liquid; a beverage.
Water fresh and potable. — Bacon
Useful in potables. — J. Philips