† ˈcunicleObs.rare. [ad. L. cunīcul-us rabbit, underground burrow or passage: in 16th c. F. cunicule.] A hole, cave, or passage under ground. 1657Tomlinson Renou's Disp. 422 Whose cunicles contain not any flint or other stone.1658–96Phillips Cunicle, (lat.) a Mine or Hole under ground.