Noun

• S: (n) pit, cavity (a sizeable hole (usually in the ground)) "they dug a pit to bury the body"
• S: (n) cavity, enclosed space (space that is surrounded by something)
• S: (n) cavity, caries, dental caries, tooth decay (soft decayed area in a tooth; progressive decay can lead to the death of a tooth)
• S: (n) cavity, bodily cavity, cavum ((anatomy) a natural hollow or sinus within the body)