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.
Nearby words
drill corps, drill down, drill pipe, drill press, drill rig, drill string, drill team, drill tower, drilling, drilling mud, 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
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