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rotary
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- Rotary - a. - Turning, as a wheel on its axis; pertaining to, or resembling, the motion of a wheel on its axis; rotatory; as, rotary motion.
- Trochilics - n. - The science of rotary motion, or of wheel work.
- Rifle - n. - A gun, the inside of whose barrel is grooved with spiral channels, thus giving the ball a rotary motion and insuring greater accuracy of fire. As a military firearm it has superseded the musket.
- Vire - n. - An arrow, having a rotary motion, formerly used with the crossbow. Cf. Vireton.
- Circumgyrate - v. t. & i. - To roll or turn round; to cause to perform a rotary or circular motion.
- Boomerang - n. - A very singular missile weapon used by the natives of Australia and in some parts of India. It is usually a curved stick of hard wood, from twenty to thirty inches in length, from two to three inches wide, and half or three quarters of an inch thick. When thrown from the hand with a quick rotary motion, it describes very remarkable curves, according to the shape of the instrument and the manner of throwing it, often moving nearly horizontally a long distance, then curving upward to a considerable height, and finally taking a retrograde direction, so as to fall near the place from which it was thrown, or even far in the rear of it.
- Left-handed - a. - Having a direction contrary to that of the hands of a watch when seen in front; -- said of a twist, a rotary motion, etc., looked at from a given direction.
- Trochilic - a. - OF or pertaining to rotary motion; having power to draw out or turn round.
- Mill - n. - To shape, finish, or transform by passing through a machine; specifically, to shape or dress, as metal, by means of a rotary cutter.
- Rotal - a. - Relating to wheels or to rotary motion; rotary.
- Bore - v. i. - To make a hole or perforation with, or as with, a boring instrument; to cut a circular hole by the rotary motion of a tool; as, to bore for water or oil (i. e., to sink a well by boring for water or oil); to bore with a gimlet; to bore into a tree (as insects).
- Rotator - n. - that which gives a rotary or rolling motion, as a muscle which partially rotates or turns some part on its axis.
- Milling - n. - The act or employment of grinding or passing through a mill; the process of fulling; the process of making a raised or intented edge upon coin, etc.; the process of dressing surfaces of various shapes with rotary cutters. See Mill.
- Vortex - n. - A supposed collection of particles of very subtile matter, endowed with a rapid rotary motion around an axis which was also the axis of a sun or a planet. Descartes attempted to account for the formation of the universe, and the movements of the bodies composing it, by a theory of vortices.