from the GNU version of the Collaborative International Dictionary of English
- n. a portable drilling machine, provided with a breastplate, for forcing the drill against the work.
from The Century Dictionary and Cyclopedia
- n. In mech., a drill-stock operated by a crank and bevel gearing, and having a piece against which the workman bears his breast when engaged in drilling.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a portable drill with a plate that is pressed against the chest to force the drill point into the work
Sorry, no etymologies found.