Lo"tion (?), n. [L. lotio, fr. lavare, lotum, to wash: cf. F. lotion. See Lave to wash.]
1.
A washing, especially of the skin for the purpose of rendering it fair.
2.
A liquid preparation for bathing the skin, or an injured or diseased part, either for a medicinal purpose, or for improving its appearance.
© Webster 1913.