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straight; direct; traveling a direct route:
Some railroads advertise air-line routes between stations.
Historical Examples

Vogel’s suspicion of an air-line in the spectrum of Vesta has, accordingly, not been confirmed.
A Popular History of Astronomy During the Nineteenth Century Agnes M. (Agnes Mary) Clerke

Tupelo is about forty miles south of Rienzi, on an air-line.
The Iron Furnace John H. Aughey

Leave her in quiet possession of the road, and we take an air-line over her back.
Karl Krinken, His Christmas Stocking Susan Warner

Like his companion, this insect rose and encircled the stump several times, ere it darted away toward its hive, in an air-line.
Oak Openings James Fenimore Cooper

It is seventy miles in an air-line from Stony Crossing to the fort.
Raw Gold Bertrand W. Sinclair

The animal flew in an air-line toward a point of wood distant fully half a mile, and on the margin of the prairie.
Oak Openings James Fenimore Cooper

He holds his reins with a firm hand, and big incidents never swerve from an air-line track.
Continental Monthly , Vol. 5, No. 6, June, 1864 Various

Although he moved swiftly, and nearly by an air-line, his thoughts scarce kept company with his feet.
Oak Openings James Fenimore Cooper

The goats T—— and I now looked at were a mile away in an air-line, and they seemed numberless.
American Big-Game Hunting Various

We left the track in an air-line course for the dark mystery out of which the noise came.
My Attainment of the Pole Frederick A. Cook


Read Also:

  • Airline

    straight; direct; traveling a direct route: Some railroads advertise air-line routes between stations. Aeronautics. a system furnishing air transport, usually scheduled, between specified points. the airplanes, airports, etc., of such a system. Often, airlines. a company that owns or operates such a system. a direct line; beeline. an airhose used to pipe air to a […]

  • Airliner

    a passenger aircraft operated by an . Contemporary Examples When 239 people disappear on an airliner, who takes the hot seat? Aviation Leaders Went Missing Along With MH370 Clive Irving May 6, 2014 Beck was totally unaware that earlier that morning the Soviets had shot down a Korean airliner in the Sea of Japan. The […]

  • Air lock

    Civil Engineering. an airtight chamber permitting passage to or from a space, as in a caisson, in which the air is kept under pressure. the impedance in the functioning of a pump or a system of piping caused by the presence of an air bubble; vapor lock. to place in or confine to an air […]

  • Air log

    Aeronautics. a device for recording the distance traveled by an aircraft, relative to the air through which it moves. Rocketry. a device for regulating the range of a guided missile.

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