a drink or draft, esp. one having or reputed to have medicinal, poisonous, or magical powers: a love potion; a sleeping potion.
Origin: 1300–50; ME pocion < L pōtiōn- (s. of pōtiō) a drinking, equiv. to pōt(us), var. of pōtātus, ptp. of pōtāre to drink + -iōn--ion; r. ME pocioun < AF < L, as above