drill string

noun

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

drill string

noun

1. (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

Word History and Origins

Origin of drill string¹

First recorded in 1695–1705