coredrill
nounUK /ˈkɔːdrɪl/
US /ˈkɔːrdrɪl/
A coredrill is a special tool that makes a round hole in the ground and keeps the middle piece.
The workers used a coredrill to take a sample of the rock.
SYNONYMS
RELATED WORDS
OTHER MEANINGS
2. A drill that cuts a ring-shaped hole and leaves a solid cylinder of material in the center.
The coredrill left a neat circle in the concrete wall.
3. A machine used to remove a cylindrical sample of rock or soil for study.
Scientists brought a coredrill to the site to study the layers of earth.
4. To make a hole using a tool that keeps the center piece.
They coredrilled the wall to run the new pipes through.