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lamp. -- Lamp jack. See 2d Jack, n., 4 (l) & (n). -- Lamp shade, a screen, as of paper, glass, or tin, for softening or obstructing the light of a lamp. -- Lamp shell (Zoöl.), any brachiopod shell of the genus Terebratula and allied genera. The name refers to the shape, which is like that of an antique lamp. See Ter…

, rain, etc. ; -- sometimes portable, as a closed vessel or case of horn, perforated tin, glass, oiled paper, or other material, having a lamp or candle within; sometimes fixed, as the glazed inclosure of a street light, or of a lighthouse light.

f brass, lead, or other soft metal, used to hold a cutting or polishing powder in cutting glass, gems, and the like, or in polishing cutlery, etc. It is usually in the form of wheel or disk, which revolves on a vertical axis. Lap joint, a joint made by one layer, part, or piece, overlapping another, as in the scarfing…

of the oxides of lead. It is used as a paint or cement and also as an ingredient of flint glass. -- Red lead ore (Min.), crocoite. -- Sugar of lead, acetate of lead. -- To arm the lead, to fill the hollow in the bottom of a sounding lead with tallow in order to discover the nature of the bottom by the substances adh…

A glass tube of peculiar construction, adapted for drawing blood from a scarified part by means of a vacuum. Horse leech, a less powerful European leech (Hæmopis vorax), commonly attacking the membrane that lines the inside of the mouth and nostrils of animals that drink at pools where it lives.

An oven in which glassware is annealed.

A piece of glass, or other transparent substance, ground with two opposite regular surfaces, either both curved, or one curved and the other plane, and commonly used, either singly or combined, in optical instruments, for changing the direction of rays of light, and thus magnifying objects, or otherwise modifying visio…

A mineral having a glassy fracture, occurring in translucent trapezohedral crystals. It is a silicate of alumina and potash. It is found in the volcanic rocks of Italy, especially at Vesuvius.

level, a spirit level. See Spirit level (below). -- Box level, a spirit level in which a glass-covered box is used instead of a tube. -- Garpenter's level, Mason's level, either the plumb level or a straight bar of wood, in which is imbedded a small spirit level. -- Level of the sea, the imaginary level from which h…

A glass jar or bottle used to accumulate electricity. It is coated with tin foil, within and without, nearly to its top, and is surmounted by a brass knob which communicates with the inner coating, for the purpose of charging it with electricity. It is so named from having been invented in Leyden, Holland.…

A concave metallic mirror attached to the object-glass end of a microscope, to throw down light on opaque objects; a reflector.

th on or upon; formerly with into. The several degrees of vision, which the assistance of glasses (casually at first lit on) has taught us to conceive. Locke. They shall light into atheistical company. South. And here we lit on Aunt Elizabeth, And Lilia with the rest. Tennyson.

ich the magazine of a naval vessel is lighted, being separated from the magazine by heavy glass windows.

o put the lips to; hence, to kiss. The bubble on the wine which breaks Before you lip the glass. Praed. A hand that kings Have lipped and trembled kissing. Shak.

te in terms or amount.[Obs.] "Though the debt should be entirely liquid." Ayliffe. Liquid glass. See Soluble glass, under Glass.

in a current of air or by calcining lead nitrate or carbonate. It is used in making flint glass, in glazing earthenware, in making red lead minium, etc. Called also massicot.

ep, caused by eating the loco weed and characterized by a slow, measured gait, high step, glassy eyes with defective vision, delirium, and gradual emaciation.

e of logs. -- Log canoe, a canoe made by shaping and hollowing out a single log. -- Log glass (Naut.), a small sandglass used to time the running out of the log line. -- Log line (Naut.), a line or cord about a hundred and fifty fathoms long, fastened to the log-chip. See Note under 2d Log, n., 2. -- Log perch (Zoö…

A neutral tint given to spectacles, shade glasses for optical instruments, etc., which reduces the intensity without materially changing the color of the transmitted light.

An opera glass; pl.