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

 

welly

 noun
noun
BrE BrE//ˈweli//
 
; NAmE NAmE//ˈweli//
 
 
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  • (pl. wellies) (British English, informal) = wellington a pair of green wellies
  • Idioms (British English, informal) to use a lot of physical effort