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Aspic :: Aspic (n.) A savory meat jelly containing portions of fowl, game, fish, hard boiled eggs, etc..

Head :: Head (n.) The uppermost, foremost, or most important part of an inanimate object; such a part as may be considered to resemble the head of an animal; often, also, the larger, thicker, or heavier part or extremity, in distinction from the smaller or thinner part, or from the point or edge; as, the head of a cane, a nail, a spear, an ax, a mast, a sail, a ship; that which covers and closes the top or the end of a hollow vessel; as, the head of a cask or a steam boiler..

Soap :: Soap (n.) A substance which dissolves in water, thus forming a lather, and is used as a cleansing agent. Soap is produced by combining fats or oils with alkalies or alkaline earths, usually by boiling, and consists of salts of sodium, potassium, etc., with the fatty acids (oleic, stearic, palmitic, etc.). See the Note below, and cf. Saponification. By extension, any compound of similar composition or properties, whether used as a cleaning agent or not..

Scale :: Scale (n.) An incrustation deposit on the inside of a vessel in which water is heated, as a steam boiler..

Feed :: Feed (n.) The supply of material to a machine, as water to a steam boiler, coal to a furnace, or grain to a run of stones..

Potboiler :: Potboiler (n.) A term applied derisively to any literary or artistic work, and esp. a painting, done simply for money and the means of living..

Pitch :: Pitch (n.) A thick, black, lustrous, and sticky substance obtained by boiling down tar. It is used in calking the seams of ships; also in coating rope, canvas, wood, ironwork, etc., to preserve them..

Gusset :: Gusset (n.) A kind of bracket, or angular piece of iron, fastened in the angles of a structure to give strength or stiffness; esp., the part joining the barrel and the fire box of a locomotive boiler..

Buck :: Buck (v. t.) To soak, steep, or boil, in lye or suds; -- a process in bleaching..

Gutta-percha :: Gutta-percha (n.) A concrete juice produced by various trees found in the Malayan archipelago, especially by the Isonandra, / Dichopsis, Gutta. It becomes soft, and unpressible at the tamperature of boiling water, and, on cooling, retains its new shape. It dissolves in oils and ethers, but not in water. In many of its properties it resembles caoutchouc, and it is extensively used for many economical purposes. The Mimusops globosa of Guiana also yields this material..

Syrup :: Syrup (n.) A thick and viscid liquid made from the juice of fruits, herbs, etc., boiled with sugar..

Fry :: Fry (v. i.) To simmer; to boil.

Foam :: Foam (n.) To form foam, or become filled with foam; -- said of a steam boiler when the water is unduly agitated and frothy, as because of chemical action..

Jelly :: "Jelly (n.) The juice of fruits or meats boiled with sugar to an elastic consistence; as, currant jelly; calf's-foot jelly..

Jacket :: "Jacket (n.) An outer covering for anything, esp. a covering of some nonconducting material such as wood or felt, used to prevent radiation of heat, as from a steam boiler, cylinder, pipe, etc..

Injector :: Injector (n.) A contrivance for forcing feed water into a steam boiler by the direct action of the steam upon the water. The water is driven into the boiler by the impulse of a jet of the steam which becomes condensed as soon as it strikes the stream of cold water it impels; -- also called Giffard's injector, from the inventor..

Kettle :: Kettle (n.) A metallic vessel, with a wide mouth, often without a cover, used for heating and boiling water or other liguids..

Simmer :: Simmer (v. t.) To cause to boil gently; to cook in liquid heated almost or just to the boiling point.

Glycogen :: Glycogen (n.) A white, amorphous, tasteless substance resembling starch, soluble in water to an opalescent fluid. It is found abundantly in the liver of most animals, and in small quantity in other organs and tissues, particularly in the embryo. It is quickly changed into sugar when boiled with dilute sulphuric or hydrochloric acid, and also by the action of amylolytic ferments..

Pipkin :: Pipkin (n.) A small earthen boiler.

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