atrium cordis, atrium of the heart - the upper chamber of each half of the heart

pouch, pocket - (anatomy) saclike structure in any of various animals (as a marsupial or gopher or pelican)

ear lobe, earlobe - the fleshy pendulous part of the external human ear

external ear, outer ear - the part of the ear visible externally

tragus - a small cartilaginous flap in front of the external opening of the ear

cauliflower ear - an auricle deformed by injury; common among boxers

cartilaginous structure - body structure given shape by cartilage