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

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