Auger (drill) An auger is a drilling device, or drill bit, that 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.
Dumas is a Southern French topographic surname, with fused preposition and definite article du, for someone who lived in an isolated dwelling in the country rather than in a village, from Occitan mas 'farmstead' (Late Latin mansum, mansus). Adolphe Dumas (1805-1861), French poet.
A duma (Ð´ÑÐ¼Ð°) is a Russian assembly with advisory or legislative functions. The term comes from the Russian verb Ð´ÑÐ¼Ð°ÑÑ (dumatâ) meaning to think or to consider. The first formally constituted duma was the State Duma introduced into the Russian Empire by Tsar Nicholas II in 1906.