ptisan

noun

1. a drink made by boiling down barley with water and other ingredients; barley water
2. any similar decoction, as of herbs

Origin: ME tysane < MFr tisane < VL tisana, for L ptisana, barley groats, drink made from barley groats < Gr ptisanē, peeled barley < ptissein, to peel < IE base *pis-, to crush > L pinsere, to beat, crush