Webster's English Dictionary

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lamp

lamp \'lamp\ n [ME, fr. OF lampe, fr. L lampas, fr. Gk, fr. lampein to 
   shine]; akin to ON leiptr lightning 1a: a vessel with a wick for burning 
   oil or other inflammable liquid to pro duce artificial light 1b: any of 
   various devices for producing light or heat  2: a heavenly body  3: a 
   source of intellectual or spiritual illumination