The Hot Room at a Roman Bathhouse
This page is the CodyCross answer for the clue below from Prehistory, Group 1260, Puzzle 2 (Tin and Copper).
Question is: The Hot Room at a Roman Bathhouse
and the answer is: CALDARIUM
Word Meaning:
CALDARIUM — (historical) In Roman baths, the hottest room, with a plunge-pool. It preceded the tepidarium and frigidarium.
Definitions from Wiktionary.