drill rod
- noun
- /drɪl rɑd/
- Specialized
- The engineer selected a high-quality drill rod to ensure the rock drill would function efficiently.
Examples
-
Controlling the push and rotation, a series of drill rods can be placed in the ground.
Academic text (1996) -
Once the pilot hole bit reaches the desired location, reamers and carrier pipe can be attached to the drill rods.
Academic text (1996) -
The drill rods are then leap-frogged, and the hole is sequentially enlarged until the pipe can be pulled into place.
Academic text (1996) -
For the construction project, they needed durable drill rods to withstand the extreme conditions underground.
-
The technician explained that the drill rod was essential for creating strong and precise holes in the machine parts.
Synonyms
A strong metal used to make rods or bits for rock drills and dowels
Surface Forms
Morphology
The compound follows a regular noun+noun composition where 'drill' modifies 'rod' to indicate a rod used for drilling or as part of a drill, so a learner who knows 'drill' and 'rod' can infer it denotes a long piece related to drilling. Although the dictionary definition adds technical details about material and quality, the basic referent (a rod for drilling) is transparently derivable from the constituents.
Etymology
Drill rod comes from the simple image of a long, strong metal rod used in a drill to push into rock or earth. Because it had to be very hard and long-lasting, the name now means a high-quality steel bar made for heavy drilling and tough machine parts.