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An herbal infusion or similar preparation drunk as a beverage or for its mildly medicinal effect.
[French, barley water, from Old French, from Latin ptisana, tisana; see ptisan.]
(Cookery) an infusion of dried or fresh leaves or flowers, as camomile
[C19: from French, from Latin ptisana barley water; see ptisan]
a decoction of herbs usu. drunk for medicinal purposes.
[1930–35; < French, Old French < Latin (p)tisana pearl barley, barley and water < Greek ptisánē, akin to ptíssein to husk grain]