xystus

1 Roman garden planted with groves of plane-trees, usually laid out with flower-beds and surrounded with a colonnaded ambulatory, like a cloister.

2 Long covered portico, open-sided colonnade, or court used for athletic exercises in Ancient Greece.

3 Covered promenade.

4 Church ambulatory.

5 Long loggia or verandah.

6 Hypaethral walk, shaded by trees.

7 Part of a Roman house, bigger than an atrium, surrounded by a peristyle, and planted in the middle.