drill

中文： 钻、演练、训练

1. A tool or machine 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.
2. The portion of a drilling tool that drives the bit. · Use a drill with a wire brush to remove any rust or buildup.
3. An activity done as an exercise or practice (especially a military exercise), particularly in preparation for some possible future event or occurrence. · fire drill· disaster drill
4. A short and highly repeatable sports training exercise designed to hone a particular skill that may be useful in competition. · At today's practice, the football team performed a variety of goalkeeping drills.
5. Any of several molluscs, of the genus Urosalpinx and others, especially the oyster drill (Urosalpinx cinerea), that make holes in the shells of their prey.
6. A style of trap music with gritty, violent lyrics, originating on the South Side of Chicago. (uncountable)
7. A single performance of drill music. (countable)

复数 drills