Hypocaust
Pronunciation : Hyp"o*caust
Part of Speech : n.
Etymology : [L. hypocaustum, Gr. hypocauste.] (Anc. Arch.)
Definition : Defn: A furnace, esp. one connected with a series of small chambers and flues of tiles or other masonry through which the heat of a fire was distributed to rooms above. This contrivance, first used in bath, was afterwards adopted in private houses.
Source : Webster's Unabridged Dictionary, 1913