any of various devices furnishing artificial light, as by electricity or gas. Compare fluorescent lamp, incandescent lamp.
a container for an inflammable liquid, as oil, which is burned at a wick as a means of illumination.
a source of intellectual or spiritual light: the lamp of learning.
any of various devices furnishing heat, ultraviolet, or other radiation: an infrared lamp.
a celestial body that gives off light, as the moon or a star.
a torch.
lamps, Slang. the eyes.
verb (used with object)
Slang. to look at; eye.
smell of the lamp, to give evidence of laborious study or effort: His dissertation smells of the lamp.

1150–1200; Middle English lampe < Old French < Late Latin lampada, for Latin lampas (stem lampad-) < Greek lampás lamp; akin to lámpē torch, lamp, lámpein to shine

lampless, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
lamp (læmp)
1.  a.  any of a number of devices that produce illumination: an electric lamp; a gas lamp; an oil lamp
 b.  (in combination): lampshade
2.  a device for holding one or more electric light bulbs: a table lamp
3.  a vessel in which a liquid fuel is burned to supply illumination
4.  any of a variety of devices that produce radiation, esp for therapeutic purposes: an ultraviolet lamp
[C13 lampe, via Old French from Latin lampas, from Greek, from lampein to shine]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

c.1200, from O.Fr. lampe (12c.), from L. lampas, from Gk. lampas "torch, lamp, beacon, meteor, light," from lampein "to shine," from PIE base *lap- "to shine" (cf. Lith. lope "light," O.Ir. lassar "flame"). Replaced O.E. leohtfæt "light vessel." Lamp-black (1598) is a pigment made from pure, fine
carbon, originally from the soot produced by burning oil in lamps.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

lamp (lāmp)
A device that generates light, heat, or therapeutic radiation.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Bible Dictionary

Lamp definition

(1.) That part of the candle-sticks of the tabernacle and the temple which bore the light (Ex. 25:37; 1 Kings 7:49; 2 Chr. 4:20; 13:11; Zech. 4:2). Their form is not described. Olive oil was generally burned in them (Ex. 27:20). (2.) A torch carried by the soliders of Gideon (Judg. 7:16, 20). (R.V., "torches.") (3.) Domestic lamps (A.V., "candles") were in common use among the Hebrews (Matt. 5:15; Mark 4:21, etc.). (4.) Lamps or torches were used in connection with marriage ceremonies (Matt. 25:1). This word is also frequently metaphorically used to denote life, welfare, guidance, etc. (2 Sam. 21:17; Ps. 119:105; Prov. 6:23; 13:9).

Easton's 1897 Bible Dictionary
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Example sentences for Lamps
The better lamps multiplied the niches and wicks to provide more candlepower.
Fluorescent lamps have much higher efficacy than filament lamps.
Some have lower efficacy than filament lamps, and some significantly higher.
With some discharge lamps, very high voltage is used to strike the arc.
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