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A monstrous bird of Arabian mythology. [Written also rock, and rukh.] Brande & C.

Artificial rockwork made of rough stones and cement, as for gardens.

A name of Allium Scorodoprasum and A. Ascalonium, two kinds of garlic, the latter of which is also called shallot.

Pertaining to, or designating, a dibasic acid of the oxalic series found in archil (Roccella tinctoria, etc.), and other lichens, and extracted as a white crystalline substance C17H32O4.

A red dyestuff, used as a substitute for cochineal, archil, etc. It consists of the sodium salt of a complex azo derivative of naphtol.

Rock. [Obs.] Chaucer.

A kind of alum occuring in small fragments; -- so called from Rocca, in Syria, whence alum is said to have been obtained; -- also called rock alum.

See Sheepback.

Lime in the lump after it is burned; quicklime. [Eng.]

A seaport town in France. Rochelle powders. Same as Seidlitz powders. -- Rochelle salt (Chem.), the double tartrate of sodium and potassium, a white crystalline substance. It has a cooling, saline, slightly bitter taste and is employed as a mild purgative. It was discovered by Seignette, an apothecary of Rochelle, and…

fference between an idler with a hat and national cockade, and an idler in a cowl or in a rochet. Burke.

A tank in which alum is crystallized from a solution.

See Roc.

revolving, -- usually carrying levers by means of which it receives and communicates reciprocating motion, as in the valve gear of some steam engines; -- called also rocker, rocking shaft, and way shaft.

An oscillating bar in a machine, as the lever of the bellows of a forge.

Formerly, a light, low, four-wheeled carriage, with standing top, open at the sides, but having waterproof curtains which could be let down when occasion required; now, a somewhat similar, but heavier, carriage, inclosed, except in front, and having a door at each side.

See Rokelay. [Scot.]

One who rocks; specifically, one who rocks a cradle. It was I, sir, said the rocker, who had the honor, some thirty years since, to attend on your highness in your infancy. Fuller.

Shaped like a rocker; curved; as, a rockered keel.

A mound formed of fragments of rock, earth, etc., and set with plants.