TUNNEL n.
A level passage driven across the measures, or at right angles to veins which it is desired to reach; -- distinguished from the drift, or gangway, which is led along the vein when reached by the tunnel. Tunnel head (Metal.), the top of a smelting furnace where the materials are put in. -- Tunnel kiln, a limekiln in wh…
TURN v. 2 definitions
To cause to return or retrace one's steps; hence, to drive away; to repel. Shak. -- To turn down. (a) To fold or double down. (b) To turn over so as to conceal the face of; as, to turn down cards. (c) To lower, or reduce in size, by turning a valve, stopcock, or the like; as, turn down the lights. -- To turn in. (a)…