#1 Fossa n. [pit, fossa] a concavity in a surface (especially an anatomical depression). wn
#2 Fossa n. [genus Fossa] monotypic genus of Madagascar civets closely related to palm civets. wn
#3 Fossa n. [fossa, fossa cat, Cryptoprocta ferox] largest carnivore of Madagascar; intermediate in some respects between cats and civets. wn
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