Applied to various tools or contrivances having a jumping motion. Quarrying. A heavy drill worked either by hand or by means of a hammer, used in…

a drill with a spiral shank.

a drill with a shoulder or collar to limit the depth of penetration.

A hand-operated or hand-held drill (drill, n.2 1); a wheel brace.

a cylindrical drill with the cutting point shaped into two pyramidal planes.

(a) a drill used to bore slots which is capable of being moved laterally by a certain distance when in use; (b) a bench drill equipped with one…

(a) Engineering = crown drill n. (now rare); (b) Entomology any of various insects, typically moths or beetles, whose larvae bore into and damage…

a drill having a central projecting bit surrounded by a cutting face, used for countersinking.

A drilling machine operated by a foot pedal; esp. one formerly used in dentistry.

A machine for tunnelling through rock; a machine for drilling holes in rock in which blasting charges are placed. Now rare.

= pin drill n.

Of, pertaining to, or invented by Archimedes.

A type of drill with expanding cutters (see quot. 1895).

a portable rock-drill, used in stoping.

Applied to various objects resembling the stem of a plant or of a flower, etc. (Cf. stalk, n.1 4 5.) Similarly, a drill used by a burglar or…

An electrically-powered hand-held device used to turn a screw into or out of its place, typically resembling and operating in a way similar to a…