A hole or tunnel dug in the ground by a small animal, such as a rabbit or mole, for habitation or refuge. A narrow or snug place. To dig a hole or tunnel for habitation or refuge. To live or hide in such a place. To move or progress by or as if by digging or tunneling: "Suddenly the train is burrowing through the pinewoods\u201d ( William Styron). To make by or as if by tunneling. To dig a hole or tunnel in or through. Archaic To hide in or as if in a burrow.