Lewis & Short

† ptĭsăna, ae, f., = πτισάνη (al. tisana).

  1. I. Barley crushed and cleaned from the hulls, barley-groats, pearl-barley, Cels. 2, 18, 24; Mart. 12, 72, 5; Scrib. Comp. 93; Vulg. Prov. 27, 22.
  2. II. Transf., a drink made from barley-groats, barley-water, ptisan, Varr. ap. Non. 550, 19; Plin. 18, 7, 15, § 74.