- Cardiac chamber - Heart chamber - Section of the heart - A cavity, or one of the cavities, of an organ, as of the
larynx or the brain; specifically, the posterior chamber, or one of the
two posterior chambers, of the heart, which receives the blood from the
auricle and forces it out from the heart. See Heart. - The stomach. - Fig.: Any cavity, or hollow place, in which any function
may be conceived of as operating.