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- enPR: twĭstʹdrĭl'
twist drill (plural twist drills)
- A rotating cutting tool, used for cutting holes in rigid materials, that consists of an essentially conical point, relieved and fluted to form cutting lips, and spiral flutes which direct the chips away from the lips and toward ejection from the hole.
(rotating tool used for cutting holes): drill bit, drill
rotating tool used for cutting holes — See also translations at drill bit