drillˈer noun

drillˈ-barrow noun

A grain-drill driven by hand

drill bit noun

A removable cutting and boring head in a drill

drillˈ-harrow noun

A harrow for working between drills

drillˈhole noun

A hole bored in the ground eg for rock samples

drillˈ-husbandry noun

The method of sowing seed in drills or rows

drilling machine, drilling lathe or drillˈ-press noun

A machine for boring with a drill or drills

drilling mud noun

A mixture of clays, water, density-increasing agents and sometimes thixotropic agents pumped down through the drilling pipe and used to cool, lubricate and flush debris from the drilling assembly, providing the hydrostatic pressure to contain the oil and gas when this is reached

drilling pipe noun

The tube that connects the drilling platform to the drill bit and imparts rotary motion to the latter

drilling platform noun

A floating or fixed offshore structure supporting a drilling rig

drilling rig or drill rig noun

The complete apparatus and structure required for drilling an oil well

drillˈ-master noun

A person who teaches drill, or who trains in anything, esp in a mechanical manner

drillˈ-plough noun

A plough for sowing grain in drills

drill-press see drilling machine above.

drill rig see drilling rig above.

drillˈ-sergeant noun

A sergeant who drills soldiers

drillˈship noun

A free-floating ship-shaped drilling platform

drill string noun

A pipe made of metal tubes that forms the bore of a drillhole, esp for oil or gas

drill down (computing)

To navigate from a higher to a lower level of a hierarchically structured database