ptisana
From LSJ
Ἓν οἶδα, ὅτι οὐδὲν οἶδα → I know only one thing, that I know nothing | all I know is that I know nothing.
Latin > English (Lewis & Short)
ptĭsăna: ae, f., = πτισάνη> (al. tisana).
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.—
II Transf., a drink made from barley-groats, barley-water, ptisan, Varr. ap. Non. 550, 19; Plin. 18, 7, 15, § 74.
