xystus

There are other similar instances as in the case of "xystus," "prothyrum," "telamones," and some others of the sort.

Then they crossed the xystus to the peristyle, and went along a carpeted corridor to the atrium.

In Rome this custom prevailed, at least since the pontificates of Xystus and Telesphorus (about 120).

Xystus (—Hall) the name of the luxuriously-adorned garden back of the peristyle.