PIPELINES Antonyms

• a duct that provides ventilation (as in mines)

• a designated route followed by airplanes in flying from one airport to another

• the passages through which air enters and leaves the body

• a commercial enterprise that provides scheduled flights for passengers

• a conduit that resembles a bridge but carries water over a valley

• (astronomy) an indistinct surface feature of Mars once thought to be a system of channels; they are now believed to be an optical illusion

• a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance

• long and narrow strip of water made for boats or for irrigation

• provide (a city) with a canal

• a long narrow excavation in the earth

• any small natural waterway

• forsake

• throw away

• sever all ties with, usually unceremoniously or irresponsibly

• make an emergency landing on water

• crash or crash-land

• cut a trench in, as for drainage

• a trodden path

• a major road for any form of motor transport

• line that is the commercial organization responsible for operating a system of transportation for trains that pull passengers or freight

• a line of track providing a runway for wheels

• compel by coercion, threats, or crude means

• supply with railroad lines

• transport by railroad

• a large natural stream of water (larger than a creek)

• a navigable body of water

• a conduit through which water flows