fossa

Noun

Synonyms: pit genus Fossa fossa cat Cryptoprocta ferox

WordNet 3.0

Noun (3)

a concavity in a surface (especially an anatomical depression)Synonyms: pit
monotypic genus of Madagascar civets closely related to palm civetsSynonyms: genus Fossa
largest carnivore of Madagascar; intermediate in some respects between cats and civetsSynonyms: fossa cat Cryptoprocta ferox

Webster's Dictionary (GCIDE)

fossa \fos"sa\, n.; pl. foss[ae]. [L., a ditch. See Fosse.] (Anat.) A pit, groove, cavity, or depression, of greater or less depth; as, the temporal fossa on the side of the skull; the nasal foss[ae] containing the nostrils in most birds. [1913 Webster]