A drill worked by hand, not struck with a hammer.

A simple rotational hand-operated tool of prehistoric origin, used as a fire drill for ignition, or for other drilling tasks such as woodwork and dentistry.

A technique for boring holes by means of tools attached to a rope and alternately lifted and lowered.

(informal) To be acquainted with the normal process or procedure of a given activity or situation; to be familiar with how something is done.

present participle of drill down

simple past tense and past participle of drill down

(colloquial, derogatory) A teaching technique in which students are repeatedly drilled on the same material.

(chiefly of a screw) self-tapping with a drill point

(US, military, slang) sleep

The process of boring a hole deep into the ground for the purpose of extracting a natural resource, such as groundwater, brine, natural gas or crude oil.