impluvium
noun
im·plu·vi·um
(ˈ)im¦plüvēəm,
əmˈp-
plural impluvia
-ēə
: a cistern or tank in the atrium or peristyle of a house of ancient Rome to receive the water falling through the compluvium
Word History
Etymology
Latin, from in- in- entry 2 + -pluvium (from pluere to rain)