Definition of double-barrelled adjective from the Oxford Advanced Learner's Dictionary

     

    double-barrelled

     adjective
    adjective
    BrE
     
    ; NAmE
     
    (especially US English double-barreled)[usually before noun] Names
     
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  1. 1(of a gun) having two barrels (= places where the bullets come out)
  2. 2(British English) (of a family name) having two parts, sometimes joined by a hyphen, for example ‘Day-Lewis’ See related entries: Names
  3. 3(of a plan, etc.) having two parts, and therefore likely to be effective