Digging, burrowing, or excavating, especially in the ground; fodient: as, a fossorial animal.Fit or used for digging or burrowing: as, a fossorial limb.Able to dig or burrow; being a burrower; specifically, of or pertaining to the Fossores, Fossoria, or Fodientia: as, fossorial nature or habits; a fossorial insect or quadruped.n. An animal which digs into the earth for a retreat or residence, and whose feet are adapted for that purpose; a burrowing animal.