'Xyst' definitions:

Definition of 'Xyst'

From: GCIDE

Xyst \Xyst\, Xystus \Xys"tus\, n. [L. xystus, Gr. ?, from ? to scrape, polish; -- so called from its smooth and polished floor.] (Anc. Arch.) A long and open portico, for athletic exercises, as wrestling, running, etc., for use in winter or in stormy weather. [1913 Webster]