XYSTUS Meaning of XYSTUS in English n. (pl. xysti) 1 a covered portico used by athletes in ancient Greece for exercise. 2 Rom. Antiq. a garden walk or terrace. [ L f. Gk xustos smooth f. xuo scrape ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012