Definition of jim-jams noun from the Oxford Advanced Learner's Dictionary

 

jim-jams

 noun
noun
BrE BrE//ˈdʒɪm dʒæmz//
 
; NAmE NAmE//ˈdʒɪm dʒæmz//
 
[plural](British English, informal)
 
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= pyjamas Word Origin early 20th cent.: abbreviation of pie-jim-jams, alteration of pyjamas.