nătātōrĭus, a, um, adj. [natator],
I of or belonging to a swimmer, that serves to swim with, natatory (post-class.): cortex, Isid. Orig. 17, 7, 27.—
II Subst.: nătātōrĭa , ae, f., and nătātōrĭum , i, n., a place for swimming, a swimming - place, a bath; a pool , Sid. Ep. 2, 2: vade ad natatoria Siloe, Vulg. Joh. 9, 7; 11.