present participle of drill down

Third-person singular simple present indicative form 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.

Synonym of Warren hoe

plural of drill hoe

A hand-cranked drill that is braced against the breast (chest) and whose axial feed can be provided by pushing or leaning therefrom.

plural of breast drill