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methyl ketol and related to indol. Methyl ketol, a weak organic base, obtained as a white crystalline substance having the odor of fæces.

A stroke, as on a door for admittance; a rap. " A knock at the door." Longfellow. A loud cry or some great knock. Holland. Knock off, a device in a knitting machine to remove loops from the needles.

See Cryolite.

e tears of the deceased person's friends were collected in it. Called also lachrymal or lacrymal.

An acid amide derived from lactic acid, and obtained as a white crystalline substance having a neutral reaction. It is metameric with alanine.

A white, crystalline substance, obtained from also, by extension, any similar substance.

A white, crystalline substance obtained as an anhydride of alanine, and regarded as an imido derivative of lactic acid.

Sugar of milk or milk sugar; a crystalline sugar present in milk, and separable from the whey by evaporation and crystallization. It has a slightly sweet taste, is dextrorotary, and is much less soluble in water than either cane sugar or glucose. Formerly called lactin.

A white, crystalline substance, having a bitter taste and a neutral reaction, and forming one of the essential ingredients of lactucarium.

A white, crystalline, tasteless substance, found in the milky sap of species of Lactuca, and constituting an essential ingredient of lactucarium.

e serving on land, as distinguished from a naval force. -- Land, ho! (Naut.), a sailor's cry in announcing sight of land. -- Land ice, a field of ice adhering to the coast, in distinction from a floe. -- Land leech (Zoöl.), any one of several species of blood-sucking leeches, which, in moist, tropical regions, live…

Hydrous carbonate of lanthanum, found in tabular while crystals.

An alkaloid found in opium in small quantities, and extracted as a white crystalline substance.

sent; a gift; a bounty bestowed. The heralds finished their proclamation with their usual cry of "Largesse, largesse, gallant knights!" and gold and silver pieces were showered on them from the galleries. Sir W. Scott.

Directed to the side; as, a lateral view of a thing. Lateral cleavage (Crystallog.), cleavage parallel to the lateral planes. -- Lateral equation (Math.), an equation of the first degree. [Obs.] -- Lateral line (Anat.), in fishes, a line of sensory organs along either side of the body, often marked by a distinct line…

; to laugh aloud. -- To laugh out of the other corner (or side) of the mouth, to weep or cry; to feel regret, vexation, or disappointment after hilarity or exaltation. [Slang]

derived from, the European bay or laurel (Laurus nobilis). Lauric acid (Chem.), a white, crystalline substance, C12H24O2, resembling palmitic acid, and obtained from the fruit of the bay tree, and other sources.

A white crystalline substance extracted from the fruit of the bay (Laurus nobilis), and consisting of a complex mixture of glycerin ethers of several organic acids.

A mineral of a light indigo-blue color, occurring in small masses, or in monoclinic crystals; blue spar. It is a hydrous phosphate of alumina and magnesia.

na glauca; -- probably so called from the glaucous color of the foliage. (b) (Chem.) Lead crystallized in arborescent forms from a solution of some lead salt, as by suspending a strip of zinc in lead acetate. -- Mock lead, a miner's term for blende. -- Red lead, a scarlet, crystalline, granular powder, consisting of…