Bible Encyclopedias
Impluvium

1911 Encyclopedia Britannica

the Latin term for the sunk part of the floor in the atrium of a Greek or Roman house, which was contrived to receive the water passing through the compluvium of the roof. The impluvium was generally in marble and sunk about a foot below the floor of the atrium.

Bibliography Information
Chisholm, Hugh, General Editor. Entry for 'Impluvium'. 1911 Encyclopedia Britanica. https://www.studylight.org/​encyclopedias/​eng/​bri/​i/impluvium.html. 1910.