Underground passage

noun

1. A covered passageway
2. A subterranean gallery (as in a mine)
3. Burrow
4. A hollow conduit or recess tube, well

verb

1. To make or use a tunnel
2. To pass through a potential barrier

   "electrons tunneling through an insulator between semiconductors"

3. To make a tunnel or similar opening through or under

noun

1. Constriction of the visual field resulting in loss of peripheral vision
2. Extreme narrowness of viewpoint narrow-mindedness

noun

1. A condition caused by compression of a nerve where it passes through the wrist into the hand and characterized especially by weakness, pain, and disturbances of sensation in the hand and fingers

noun

1. A typically unheated semi-permanent structure resembling a greenhouse that consists of a curved metal frame usually covered in heavy plastic, that is used especially to protect crops growing in or on the ground, and that is often large enough to drive a vehicle (such as a tractor) into

   "High tunnels do not have any installed temperature control system. They are warmed in the winter by the sun and cooled in the summer by the breeze."

noun

1. A tunnellike passage through which air is blown at a known velocity to investigate air flow around an object (such as an airplane part or model) placed in the passage

geographical name

1. Series of bridges and tunnels opened in 1964 and extending 17.6 miles (28.3 kilometers) across and under Chesapeake Bay from Virginia Beach, Virginia, to the southernmost tip of the Delmarva Peninsula

geographical name

1. Vehicular tunnel under the Hudson River connecting Manhattan Island, New York, with Jersey City, New Jersey; opened 1927

geographical name

1. Railroad tunnel through the Hoosac Mountains in western Massachusetts 4.75 miles (7.6 kilometers) long; opened in 1875 after 24 years of work

geographical name

1. Vehicular tunnel 8216 feet (2504 meters) long under the Hudson River connecting New York (Manhattan Island) and New Jersey and having two tubes, the first of which opened in 1937