Definition of Buckley’s noun from the Oxford Advanced Learner's Dictionary

 

Buckley’s

 noun
noun
BrE BrE//ˈbʌkliz//
 
; NAmE NAmE//ˈbʌkliz//
 
 
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Word Origin late 19th cent.: sometimes said to be from the name of William Buckley (died 1856), who, despite dire predictions as to his chances of survival, lived with the Aboriginals for many years.Idioms
not have Buckley’s (chance)
 
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(Australian English, New Zealand English, informal) used to suggest that somebody has little or no hope of achieving a particular aim