An auger is a drilling device, or drill bit, used for making holes in wood or in the ground. It usually includes a rotating helical screw blade called a 'flighting' to act as a screw conveyor to remove the drilled out material. The rotation of the blade causes the material to move out of the hole being drilled.
An auger used for digging post holes is called an earth auger, handheld power earth drill, soil auger, or mechanized post hole digger. This kind of auger can be a manually turned, handheld device, or powered by an electric motor or internal-combustion engine, possibly attached to a tractor (being pr
In construction, augers are used for special drilling rigs to dig holes, or augerating for deep foundation piles. Another use is for piles forming a piling retaining wall, which can be constructed in the same way as foundation piles.
Augers – either gas- or hand-powered – are used by ice fishermen to drill holes to fish through. Drilling into maple trees to extract maple syrup is also carried out with the use of augers.