Part 573

Cowper.

3. (Elec.) A device or mechanism for producing light by electricity. See Incandescent lamp, under Incandescent.

Æolipile lamp, a hollow ball of copper containing alcohol which is converted into vapor by a lamp beneath, so as to make a powerful blowpipe flame when the vapor is ignited. Weale. -- Arc lamp (Elec.), a form of lamp in which the voltaic arc is used as the source of light. -- Dëbereiner's lamp, an apparatus for the instantaneous production of a flame by the spontaneous ignition of a jet of hydrogen on being led over platinum sponge; -- named after the German chemist Döbereiner, who invented it. Called also philosopher's lamp. -- Flameless lamp, an aphlogistic lamp. -- Lamp burner, the part of a lamp where the wick is exposed and ignited. Knight. -- Lamp fount, a reservoir for oil, in a 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 Terebratula. -- Safety lamp, a miner's lamp in which the flame is surrounded by fine wire gauze, preventing the kindling of dangerous explosive gases; -- called also, from Sir Humphry Davy the inventor, Davy lamp. -- To smell of the lamp, to bear marks of great study and labor, as a literary composition.

Lam"pad (?), n. [Gr. &?; , &?;. See Lamp.] A lamp or candlestick. [R.]

By him who 'mid the golden lampads went.

Trench.

Lam"pa*dist (?), n. [Gr. &?;, fr. &?;, &?;, torch. See Lamp.] (Gr. Antiq.) One who gained the prize in the lampadrome.

Lam"pa*drome (?), n. [Gr. &?;; &?;, &?;, torch + &?; course, race, fr. &?; to run.] (Gr. Antiq.) A race run by young men with lighted torches in their hands. He who reached the goal first, with his torch unextinguished, gained the prize.

Lam"pas (?), n. [F. lampas.] An inflammation and swelling of the soft parts of the roof of the mouth immediately behind the fore teeth in the horse; -- called also lampers.

Lam"pate (?), n. [Cf. F. lampate.] (Chem.) A supposed salt of lampic acid. [Obs.]

Lamp"black` (?), n. [Lamp + black.] The fine impalpable soot obtained from the smoke of carbonaceous substances which have been only partly burnt, as in the flame of a smoking lamp. It consists of finely divided carbon, with sometimes a very small proportion of various impurities. It is used as an ingredient of printers' ink, and various black pigments and cements.

Lam"per eel` (?). (Zoöl.) See Lamprey.

Lam"pern (?), n. [See Lamprey.] (Zoöl.) The river lamprey (Ammocœtes, or Lampetra, fluviatilis).

The name is also applied to other river lampreys.

Lam"pers (?), n. See Lampas.

Lam"pic (?), a. [F. lampique, fr. lampe lamp. See Lamp.] (Chem.) Pertaining to, or produced by, a lamp; -- formerly said of a supposed acid.

Lamp"ing (?), a. Shining; brilliant. [Obs.] "Lamping eyes." Spenser.

Lamp"less, a. Being without a lamp, or without light; hence, being without appreciation; dull.

Your ladies' eyes are lampless to that virtue.

Beau. & Fl.

Lamp"light` (?), n. Light from a lamp.

This world's artificial lamplights.

Owen Meredith.

Lamp"light`er (?), n. 1. One who, or that which, lights a lamp; esp., a person who lights street lamps.

2. (Zoöl.) The calico bass.

Lam*poon" (?), n. [F. lampon a drinking song, fr. lampons let us drink, -- the burden of such a song, fr. lamper to guzzle, to drink much and greedily; of German origin, and akin to E. lap to drink. Prob. so called because drinking songs often contain personal slander or satire.] A personal satire in writing; usually, malicious and abusive censure written only to reproach and distress.

Like her who missed her name in a lampoon, And grieved to find herself decayed so soon.

Dryden.