1. The hot or thermal chamber of Roman baths
(
Vitr. 5.10; Sen.
Ep. 86;
Cels. 1.4;
BALNEAE). Also
the boiler in which the water for supplying the baths was heated
(Vitruv.
l.c.); see the illustration,
BALNEAE p. 279
b. These are the only usages of the word in
classical Latin.