Definition of headless adjective from the Oxford Advanced Learner's Dictionary

 

headless

 adjective
adjective
BrE BrE//ˈhedləs//
 
; NAmE NAmE//ˈhedləs//
 
[usually before noun]
 
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  • without a head a headless body/corpse
  • Idioms
    run around like a headless chicken
     
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    to be very busy and active trying to do something, but not very organized, with the result that you do not succeed
    See the Oxford Advanced American Dictionary entry: headless