A hollow area within the body (such as the sinuses). (noun)
A soft area in a decayed tooth. (noun)
Examples of word cavity
Pour the still clear soap into your mold until the cavity is about 2/3 of the way full
This cavity is a real help to extract the victim and also provides 150 Liters of air to breath if you are buried.
But police had been searching the backyard where they found what they call a cavity, where they believe human remains had been found and had been burned even.
This abnormality, which occurs as the fetus is forming, is an opening in the diaphragm (the muscle that separates the chest cavity from the abdominal cavity) that allows abdominal organs to move into the chest.
The animal could be fatally wounded but may bleed internally untill the chest cavity is full.