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Graphite, or black lead, often used on the bottoms of racing vessels to diminish friction.

Preceding the diastole of the heart; as, a prediastolic friction sound.

Preceding the systole or contraction of the heart; as, the presystolic friction sound.

A bearing containing friction rollers.

soldiers in line, in quick succession, and in the order in which they stand. -- Rolling friction, that resistance to motion experienced by one body rolling upon another which arises from the roughness or other quality of the surfaces in contact. -- Rolling mill, a mill furnished with heavy rolls, between which heate…

To subject (a body) to the action of something moving over its surface with pressure and friction, especially to the action of something moving back and forth; as, to rub the flesh with the hand; to rub wood with sandpaper. It shall be expedient, after that body is cleaned, to rub the body with a coarse linen cloth. Si…

A rotating cask or box in which small articles are smoothed or poliched by friction against each other. rumble seat, a seat in the rear of an automobile, outside the passenger cabin, which folds out from the body

ise, that they may make a kerf somewhat wider than the thickness of the blade, to prevent friction; -- called also saw-wrest.

hing rough, as sand or Bristol brick, especially for the purpose of cleaning; to clean by friction; to make clean or bright; to cleanse from grease, dirt, etc., as articles of dress.

To writhe the body so as to produce friction against one's clothes, as do those who have the itch. [Prov. Eng.] Halliwell.

ming the sides and bottom of a vessel; the shell; also, a lining inside the framing. Skin friction, Skin resistance (Naut.), the friction, or resistance, caused by the tendency of water to adhere to the immersed surface (skin) of a vessel. -- Skin graft (Surg.), a small portion of skin used in the process of grafting.…

To pass along smoothly or unobservedly; to move gently onward without friction or hindrance; as, a ship or boat slides through the water. Ages shall slide away without perceiving. Dryden. Parts answering parts shall slide into a whole. Pope.

Slippery; elusory. [Obs.] That sliding science hath me made so bare. Chaucer. Sliding friction (Mech.), the resistance one body meets with in sliding along the surface of another, as distinguished from rolling friction. -- Sliding gunter (Naut.), a topmast arranged with metallic fittings so as to be hoisted and lowere…

Causing no resistance to a body sliding along its surface; frictionless.

the other side, and delivers it so that it slips off the fingers with the least possible friction. When pitched directly overhand a spit ball darts downward, when pitched with the arm extended sidewise it darts down and out. [Cant] -- Spit baller.

o remove a portion of a piece of coin, as by shaking it with others in a bag, so that the friction wears off a small quantity of the metal. The only use of it [money] which is interdicted is to put it in circulation again after having diminished its weight by "sweating", or otherwise, because the quantity of metal cont…

The adhesive friction of a wheel on a rail, a rope on a pulley, or the like. Knight. Angle of traction (Mech.), the angle made with a given plane by the line of direction in which a tractive force acts. -- Traction engine, a locomotive for drawing vehicles on highways or in the fields.

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

An instrument to ascertain the degree of friction in rubbing surfaces. Brande & C.

A padded jacket or dress worn under armor, to protect the body from the effects of friction; also, a part of a woman's dress; a stomacher. [Obs.] Nares. Puts off his palmer's weed unto his truss, which bore The stains of ancient arms. Drayton.