Twist Drill Definition

noun
A kind of drill with deep helical grooves for carrying out chips and shavings.
Webster's New World

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.

Wiktionary
Synonyms:
  • twist-bit

Other Word Forms of Twist Drill

Noun

Singular:
twist drill
Plural:
twist-drills

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twist drill