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

 

auger

 noun
noun
BrE BrE//ˈɔːɡə(r)//
 
; NAmE NAmE//ˈɔːɡər//
 
 
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a tool for making holes in wood, that looks like a large corkscrew Word Origin Old English nafogār, from nafu (of Germanic origin) + gār ‘piercer’. The n was lost by wrong division of a nauger; compare with adder and apron.
See the Oxford Advanced American Dictionary entry: auger