Definition of imp noun from the Oxford Advanced Learner's Dictionary

     

    imp

     noun
    noun
    BrE BrE//ɪmp//
     
    ; NAmE NAmE//ɪmp//
     
     
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  1. 1 (in stories) a small creature like a little man, that has magic powers and behaves badly
  2. 2a child who behaves badly, but not in a serious way
  3. Word Origin Old English impa, impe ‘young shoot, scion’, impian ‘to graft’, based on Greek emphuein ‘to implant’. In late Middle English, the noun denoted a descendant, especially of a noble family, and later a child of the devil or a person regarded as such; hence a “little devil” or mischievous child (early 17th cent.).
See the Oxford Advanced American Dictionary entry: imp