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the wheel in an escapement (as of a clock or a watch) into the teeth of which the pallets play.

Having a paddle wheel on each side; -- said of steam vessels; as, a side-wheel steamer.

= Split pulley.

Same as Chain wheel.

Having a paddle wheel at the stern; as, a stern-wheel steamer.

A steamboat having a stern wheel instead of side wheels. [Colloq. U.S.]

A wheel used for measuring, by its motion when submerged, the velocity of flowing water; a current wheel.

A worm or worm wheel; a tangent screw.

A locomotive driving wheel which acts by friction adhesion to a smooth track.

A circular plate or a cross, with two or more cross grooves intersecting at the center, used on the end of a shaft to transmit motion to another shaft not in line with the first.

A wheel turned by persons or animals, by treading, climbing, or pushing with the feet, upon its periphery or face. See Treadmill.

Any wheel for propelling machinery or for other purposes, that is made to rotate by the direct action of water; -- called an overshot wheel when the water is applied at the top, an undershot wheel when at the bottom, a breast wheel when at an intermediate point; other forms are called reaction wheel, vortex wheel, turb…

Behind; toward the stern from; as, abaft the wheelhouse. Abaft the beam. See under Beam.

t down; low-lying. [Obs.] From the safe shore their floating carcasses And broken chariot wheels; so thick bestrown Abject and lost lay these, covering the flood. Milton.

dition. Addendum circle (Mech.), the circle which may be described around a circular spur wheel or gear wheel, touching the crests or tips of the teeth. Rankine.

Acting by the force of air and water; as, an aërohydrodynamic wheel.

n; as, strength and agility of body. They . . . trust to the agility of their wit. Bacon. Wheeling with the agility of a hawk. Sir W. Scott.

By the length; in a line with the length; lengthwise. Some laid along . . . on spokes of wheels are hung. Dryden.

A peculiar small siliceous spicule having a denticulated wheel at each end; -- found in freshwater sponges.

An axle or spindle of a wheel or opinion.