a form of auger for boring into the ground; - called also earth borer.
See also: Earth
earth auger
auger
1. A hand-held carpenter’s tool for boring holes in wood, similar to, but larger than, a gimlet; has a long steel bit usually not larger than 1 in. (25 mm) in diameter. 2. A rotary drill, usually powered, for cutting circular holes in earth or rock.MedicalSeeauger