Search the Dictionary

The act of piercing with a drill.

A drilling or tamping rod.

ast. [Obs.] By my troth, the fool has an excellent breast. Shak. Breast drill, a portable drilling machine, provided with a breastplate, for forcing the drill against the work. -- Breast pang. See Angina pectoris, under Angina. -- To make a clean breast, to disclose the secrets which weigh upon one; to make full conf…

To form a counterbore in, by boring, turning, or drilling; to enlarge, as a hole, by means of a counterbore.

A coarse cotton drilling used for overalls, etc.

ng holes in hard substances; strictly, a tool that cuts with its end, by revolving, as in drilling metals, or by a succession of blows, as in drilling stone; also, a drill press.

A machine for drilling holes in metal, the drill being pressed to the metal by the action of a screw.

ould check her gadding tongue. Tennyson. Gadding car, in quarrying, a car which carries a drilling machine so arranged as to drill a line of holes.

gation days; the time of perambulating parishes. See Gang week (below). -- Gang drill, a drilling machine having a number of drills driven from a common shaft. -- Gang master, a master or employer of a gang of workmen. -- Gang plank. See Gang board (above). -- Gang plow. See Gang cultivator (above). -- Gang press,…

ured or contained in a plane of the horizon; as, horizontal distance. Horizontal drill, a drilling machine having a horizontal drill spindle. -- Horizontal engine, one the piston of which works horizontally. -- Horizontal fire (Mil.), the fire of ordnance and small arms at point-blank range or at low angles of elevat…

A long drilling tool used by masons and quarrymen.

-- Drill lathe, or Speed lathe, a small lathe which, from its high speed, is adapted for drilling; a hand lathe. -- Engine lathe, a turning lathe in which the cutting tool has an automatic feed; -- used chiefly for turning and boring metals, cutting screws, etc. -- Foot lathe, a lathe which is driven by a treadle wo…

shaping wood, metal, etc., by means of a tool; especially, a machine, as a lathe, planer, drilling machine, etc., designed for a more or less general use in a machine shop, in distinction from a machine for producing a special article as in manufacturing. -- Machine twist, silken thread especially adapted for use in a…

dove (Zoöl.), the rock pigeon; -- called also rock doo. -- Rock drill, an implement for drilling holes in rock; esp., a machine impelled by steam or compressed air, for drilling holes for blasting, etc. -- Rock duck (Zoöl.), the harlequin duck. -- Rock eel. (Zoöl.) See Gunnel. -- Rock goat (Zoöl.), a wild goat, or…

Any one of a series of gymnastic exercises used, as in drilling recruits, for the purpose of giving an erect carriage, supple muscles, and an easy control of the limbs.

The shaft, mandrel, or arbor, in a machine tool, as a lathe or drilling machine, etc., which causes the work to revolve, or carries a tool or center, etc.

nnecting the working beam with the rope carrying the tools, for lowering the tools as the drilling progresses.

A screw link, to which is attached the rope of a rope-drilling apparatus, for feeding and slightly turning the drill jar at each stroke.

ridges of the fallow field traverse. Hayward. Traverse drill (Mach.), a machine tool for drilling slots, in which the work or tool has a lateral motion back and forth; also, a drilling machine in which the spindle holder can be adjusted laterally.

A machine tool for drilling slots, in which the work or tool has a lateral motion back and forth; also, a drilling machine in which the spindle holder can be adjusted laterally.