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e, variously constructed, for raising or transferring fluids, consisting essentially of a moving piece or piston working in a hollow cylinder or other cavity, with valves properly placed for admitting or retaining the fluid as it is drawn or driven through them by the action of the piston.

ve, a valve in the form of a circular disk, which covers a hole in its seat, and opens by moving bodily away from the seat while remaining parallel with it, -- used in steam engines, pumps, safety valves, etc. Its edge is often beveled, and fits in a conical recess in the seat when the valve is closed. See the valves s…

Any mechanical hold, or advantage, applied to the raising or removing of heavy bodies, as by a lever, a tackle, capstan, and the like; also, the apparatus, tackle, or device by which the advantage is gained. A politician, to do great things, looks for a power -- what our workmen call a purchase. Burke.…

The act of purifying; the act or operation of separating and removing from anything that which is impure or noxious, or heterogeneous or foreign to it; as, the purification of liquors, or of metals.

. Fuller. Curve of pursuit (Geom.), a curve described by a point which is at each instant moving towards a second point, which is itself moving according to some specified law.

Coming from a point well abaft the beam, but not directly astern; -- said of waves or any moving object.

Yielding or trembling under the feet, as moist or boggy ground; shaking; moving. "The queachy fens." "Godwin's queachy sands." Drayton.

To make a queen (or other piece, at the player's discretion) of by moving it to the eighth row; as, to queen a pawn.

Sand easily moved or readily yielding to pressure; especially, a deep mass of loose or moving sand mixed with water, sometimes found at the mouth of a river or along some coasts, and very dangerous, from the difficulty of extricating a person who begins sinking into it. Life hath quicksands, -- Life hath snares! Longfe…

Being in a state of repose; at rest; still; not moving; as, a quiescent body or fluid.

A going or moving from place to place without any determinate business or object; an excursion or stroll merely for recreation. Coming home, after a short Christians ramble. Swift.

Very swift or quick; moving with celerity; fast; as, a rapid stream; a rapid flight; a rapid motion. Ascend my chariot; guide the rapid wheels. Milton.

A withdrawing or retiring; a moving back; retreat; as, the recess of the tides. Every degree of ignorance being so far a recess and degradation from rationality. South. My recess hath given them confidence that I may be conquered. Eikon Basilike.

The act or process of removing a cataract, by applying the needle to its anterior surface, and depressing it into the vitreous humor in such a way that front surface of the cataract becomes the upper one and its back surface the lower one. Dunglison.

Having recurring flow and ebb; moving alternately. [Obs.] Drayton.

The act of removing; removal. [Obs.] This remotion of the duke and her Is practice only. Shak.

The act of removing, or the state of being removed.

The act of removing; a removal. This place should be at once both school and university, not needing a remove to any other house of scholarship. Milton. And drags at each remove a lengthening chain. Goldsmith.

Creeping; moving on the belly, or by means of small and short legs.

tance. -- Solid of least resistance (Mech.), a solid of such a form as to experience, in moving in a fluid, less resistance than any other solid having the same base, height, and volume.