au ‧ ger /ˈɔːɡə $ ˈɒːɡər/ BrE AmE noun [countable]
[ Date: 1500-1600 ; Origin: a nauger , mistaken for an auger ; nauger (11-17 centuries) from Old English nafogar , from nafu 'center of a wheel, hub' + gar 'spear' ; because it was originally used to make the hole in the hub of a wheel ]
a tool used for making a hole in wood or in the ground