a concavity in a surface (especially an anatomical depression)
同义词：pit
monotypic genus of Madagascar civets closely related to palm civets
同义词：genus Fossa
largest carnivore of Madagascar; intermediate in some respects between cats and civets
同义词：fossa cat, Cryptoprocta ferox
fossa详细解释
fos.sa n.（名词）【复数】fos.sae[fôs.ô.] 【解剖学】 A small cavity or depression, as in a bone.窝，凹：骨头中的小窝或凹陷 来源：Latin [ditch] [from feminine past participle of] fodere [to dig] 拉丁语 [沟] [] 源自fodere的阴性过去分词 [掘（土），挖（沟，渠）等] 【引伸】 fos.sate.
