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Webster's Dictionary (1865)

Fŏsse, n.

noun

(fŏs), n. [Fr. fosse, Sp. fosa, Pr., Pg., It., & Lat. fossa, from Lat. fodere, fossum, to dig.]

  1. (Fort.) A ditch or moat.
  2. (Anat.) (a.) A non-articular depression in a bone, wider at the margin than at the bottom; as, temporal fosse. (b.) One of variously shaped cavities in the soft parts; as, the oval fosse of the heart.