A tool used to remove material so as to create a hole, typically by plunging a rotating cutting bit into a stationary workpiece.
The portion of a drilling tool that drives the bit.
An activity done as an exercise or practice (especially a military exercise), particularly in preparation for some possible future event or occurrence.
Any of several molluscs, of the genus Urosalpinx (genus), especially the oyster drill (Urosalpinx cinerea (species)), that drill holes in the shells of other animals.