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definitions

drill string

noun

(on a drill rig) the assemblage of drill pipes that link the drill bit to the mechanism that imparts rotary or reciprocating motion.

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Nearby words

  1. drill corps,
  2. drill down,
  3. drill pipe,
  4. drill press,
  5. drill rig,
  6. drill team,
  7. drill tower,
  8. drilling,
  9. drilling mud,
  10. drilling platform

Origin of drill string

First recorded in 1695–1705
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for drill string

drill string

drill pipe

noun

(in the oil industry) a pipe made of lengths of steel tubing that is attached to the drilling tool and rotates during drilling to form a bore
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012