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Noun cavity has 4 senses
  1. pit, cavity - a sizeable hole (usually in the ground); "they dug a pit to bury the body"
    --1 is a kind of hole, hollow
    --1 has particulars:
     barbecue pit; borrow pit; divot; fire pit; quicksand; sandpit; sawpit; tar pit
  2. cavity, enclosed space - space that is surrounded by something
    --2 is a kind of space
    --2 has particulars: hollow; pouch, sac, sack, pocket
  3. cavity, caries, dental caries, tooth decay - soft decayed area in a tooth; progressive decay can lead to the death of a tooth
    --3 is a kind of decay
  4. cavity, bodily cavity, cavum - (anatomy) a natural hollow or sinus within the body
    --4 is a kind of structure, anatomical structure, complex body part, bodily structure, body structure
    --4 is a part of body, organic structure, physical structure
    --4 has particulars:
     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
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