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rosshead, etc., as of a steam engine or a pump, in which these parts have a reciprocating motion; as, the forward stroke of a piston; also, the entire distance passed through, as by a piston, in such a movement; as, the piston is at half stroke.

id grown . . . As to forsake the living God! Milton. With wild surprise, A moment stupid, motionless he stood. Thomson.

A starting, twitching, or convulsive motion.

Characterized by a shaking motion, especially an up and down movement, and not merely tremulous oscillation; as, the succussive motion in earthquakes.

To retard the motion of, as a carriage, by preventing one or more of its wheels from revolving, either by means of a chain or otherwise. [Obs.]

ike. Sun and planet wheels (Mach.), an ingenious contrivance for converting reciprocating motion, as that of the working beam of a steam engine, into rotatory motion. It consists of a toothed wheel (called the sun wheel), firmly secured to the shaft it is desired to drive, and another wheel (called the planet wheel) se…

In the direction of the sun's apparent motion, or from the east southward and westward, and so around the circle; also, in the same direction as the movement of the hands of a watch lying face upward.

to annex, as something extrinsic. The strength of any living creature, in those external motion, is something distinct from, and superadded unto, its natural gravity. Bp. Wilkins. The peacock laid it extremely to heart that he had not the nightingale's voice superadded to the beauty of his plumes. L'Estrange.…

ry; to suspend; to stay. Nothing is supposed that can supersede the known laws of natural motion. Bentley.

A muscle which produces the motion of supination.

The motion of, or produced by, a great wave.

Rising in surges or billows; full of surges; resembling surges in motion or appearance; swelling. "Over the surgy main." Pope.

A swaying, irregular motion.

To walk with a swaying motion; hence, to walk and act in a pompous, consequential manner. A man who swaggers about London clubs. Beaconsfield.

To beat the air, or ply the wings, with a sweeping motion or noise; to flap.

A large number or mass of small animals or insects, especially when in motion. "A deadly swarm of hornets." Milton.

g circular plate, set obliquely on its shaft, and acting as a cam to give a reciprocating motion to a rod in a direction parallel to the shaft.

The act of swaying; a swaying motion; the swing or sweep of a weapon. With huge two-handed sway brandished aloft. Milton.

To carry with a long, swinging, or dragging motion; hence, to carry in a stately or proud fashion. And like a peacock sweep along his tail. Shak.

Moving with a sweeping motion. The branches bend before their sweepy away. Dryden.