2. Figuratively, anything which enlightens intellectually or morally; anything regarded metaphorically a performing the uses of a lamp.

Thy word is a lamp unto my feet, and a light unto my path. --Ps. cxix. 105.

Ages elapsed ere Homer's lamp appeared. --Cowper.

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

[AE]olipile 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.

D["e]bereiner'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 D["o]bereiner, 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 (Zo["o]l.), 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.

Source: Webster's Revised Unabridged Dictionary (1913)