Noun fossa has 3 senses
  1. pit, fossa - a concavity in a surface (especially an anatomical depression)
    --1 is a kind of concave shape, concavity, incurvation, incurvature; cavity, bodily cavity, cavum
    --1 has particulars:
     glenoid fossa, glenoid cavity; glenoid fossa, mandibular fossa; pit of the stomach, epigastric fossa
  2. Fossa, genus Fossa - monotypic genus of Madagascar civets closely related to palm civets
    --2 is a kind of mammal genus
    --2 is a member of Viverridae, family Viverridae, Viverrinae, family Viverrinae
    --2 has members: fanaloka, Fossa fossa
  3. fossa, fossa cat, Cryptoprocta ferox - largest carnivore of Madagascar; intermediate in some respects between cats and civets
    --3 is a kind of viverrine, viverrine mammal
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