Any of various tooth shells of the genus Dentalium
- A tool used to remove material so as to create a hole, typically by plunging a rotating cutting bit into a stationary workpiece.
verb Wear safety glasses when operating an electric drill.
- The portion of a drilling tool that drives the bit
Use a drill with a wire brush to remove any rust or buildup.
- An activity done as an exercise or practice (especially a military exercise)
Regular fire drills can ensure that everyone knows how to exit safely in an emergency.
- A strong, durable cotton fabric with a strong bias (diagonal) in the weave.
- To create a hole by removing material with a drill (1)
Drill a small hole to start the screw in the right direction.
- To practice, especially in a military context
They drilled daily to learn the routine exactly.
- To repeat an idea frequently in order to encourage someone to remember it
The instructor drilled into us the importance of reading the instructions.
- To investigate or examine something in more detail or at a different level
Drill deeper and you may find the underlying assumptions faulty.
The sergeant was up by 6:00 every morning, drilling his troops.
(ergative) To cause one's subordinates to drill (2)