Upper Chamber of the Heart, Once Called an Auricle

This page is the CodyCross answer for the clue below from Cruise Ship, Group 644, Puzzle 1 (Cruise Director).

Question is: Upper Chamber of the Heart, Once Called an Auricle

and the answer is: ATRIUM

Word Meaning:

ATRIUM — (architecture) A central room or space in ancient Roman homes, open to the sky in the middle; a similar space in other buildings.

Definitions from Wiktionary.

Upper chamber of the heart, once called an auricle — CodyCross Answer | CodyCross Solutions