• In <em>ancient architecture</em>, a covered portico or open court, of great length in proportion to its width, in which athletes performed their exercises; or, in Roman villas, sometimes, a garden walk planted with trees. Also <em>xystos, xystus.</em>
  • A long and open portico, for athletic exercises, as wrestling, running, etc., for use in winter or in stormy weather.
  • A <xref>xystus</xref>.
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