Tunnel

tun′el, n. an arched pa age cut through a hill or under a river, .: the long underground burrow of certain animals, as the mole: any mine-level open at one end: ( Spens. ) a flue, chimney.— v.t. to make a pa age through: to hollow out:— pr.p. tunn′elling; pa.t. and pa.p. tunn′elled. — n. Tunn′el-net , a net wide at the mouth and narrow at the other end. [O. Fr. tonnel (Fr. tonneau ), a cask; also O. Fr. tonnelle , an arched vault, dim. of tonne, a cask.]