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.) See under Arbutus. -- Trailing spring, a spring fixed in the axle box of the trailing wheels of a locomotive engine, and so placed as to assist in deadening any shock which may occur. Weale. -- Trailing wheel, a hind wheel of a locomotive when it is not a driving wheel; also, one of the hind wheels of a carriage.…

field. Campbell (Dict. Mil. Sci.). -- Train of mechanism, a series of moving pieces, as wheels and pinions, each of which is follower to that which drives it, and driver to that which follows it. -- Train road, a slight railway for small cars, -- used for construction, or in mining. -- Train tackle (Naut.), a tackl…

A four-wheeled truck running on rails, and used in a mine, as for carrying coal or ore.

A road prepared for easy transit of trams or wagons, by forming the wheel tracks of smooth beams of wood, blocks of stone, or plates of iron.

100. (b) (Railroad) A platform with one or more tracks, and arranged to move laterally on wheels, for shifting cars, etc., from one line of track to another.

The part of a wheel that bears upon the road or rail.

A mill worked by persons treading upon steps on the periphery of a wide wheel having a horizontal axis. It is used principally as a means of prison discipline. Also, a mill worked by horses, dogs, etc., treading an endless belt.

A wheel, spindle, or the like; a trundle. [Obs.] The shaft the wheel, the wheel, the trendle turns. Sylvester.

A three-wheeled velocipede. See Illust. under Velocipede. Cf. Bicycle.

To stop, as a wheel, by placing something under it; to scotch; to skid.

A catch to hold the wheel of a carriage on a declivity.

Resembling a wheel. Trochal disk (Zoöl.), the cephalic disk of a rotifer. It is usually surrounded by a fringe of cilia.

The science of rotary motion, or of wheel work. Wilkins.

A wheel-like joint of the stem of a fossil crinoid.

The curve described by any point in a wheel rolling on a line; a cycloid; a roulette; in general, the curve described by any point fixedly connected with a moving curve while the moving curve rolls without slipping on a second fixed curve, the curves all being in one plane. Cycloids, epicycloids, hypocycloids, cardioid…

A contrivance for computing the revolutions of a wheel; an odometer.

inally on one side; a long tray; also, a wooden channel for conveying water, as to a mill wheel.

A small wheel, as of a vehicle; specifically (Ord.), a small strong wheel, as of wood or iron, for a gun carriage.

A small wheel or caster. Hudibras.

A low bed on wheels, that may be pushed under another bed; a trundle-bed. "His standing bed and truckle-bed." Shak.