1. (anatomy) a natural hollow or sinus within the body
2. a sizeable hole (usually in the ground); "they dug a pit to bury the body"
3. soft decayed area in a tooth; progressive decay can lead to the death of a tooth
4. space that is surrounded by something

Similar Words: bodily cavity, cavum, pit, caries, dental caries, tooth decay, enclosed space

Hyponyms: blastocoel, blastocoele, blastocele, segmentation cavity, cleavage cavity, archenteron, sinus, locule, loculus, lumen, socket, pulp cavity, eye socket, orbit, cranial orbit, orbital cavity, buccal cavity, antrum, vestibule, mediastinum, middle ear, tympanic cavity, tympanum, pleural cavity, chamber, cranial cavity, intracranial cavity, amniotic cavity, peritoneal cavity, greater peritoneal sac, bursa omentalis, omental bursa, lesser peritoneal cavity, pericardial cavity, pericardial space, vacuole, ventricle, sac, uterine cavity, nasal cavity, nasopharynx, oropharynx, laryngopharynx, cecum, caecum, blind gut, tubular cavity, armpit, axilla, axillary cavity, axillary fossa, chest cavity, thoracic cavity, abdominal cavity, abdomen, pelvis, renal pelvis, pelvic cavity, celom, coelom, celoma, pit, fossa, barbecue pit, borrow pit, divot, fire pit, quicksand, sandpit, sawpit, tar pit, hollow, pouch, sack, pocket

Part Meronyms: body, organic structure, physical structure