Burrow

v. i.
  1. To excavate a hole to lodge in, as in the earth; to lodge in a hole excavated in the earth, as conies or rabbits.
  2. To lodge, or take refuge, in any deep or concealed place; to hide.
    3. Burrowing owl (Zoöl.),
    a small owl of the western part of North America (Speotyto cunicularia), which lives in holes, often in company with the prairie dog.