verb · to drill or bore a hole

木工在木板上钻了一个圆孔。

verb · to get into, thread one's way through, or enter a hole or narrow space

老鼠钻进了洞里。

noun · a diamond or a precious gem used in jewelry or as an abrasive

他买了一颗五克拉的钻，准备做成项链。

verb · to curry favor or use connections for personal gain

他为了升职，到处钻营。

verb, adverb · to study intensively or dig into a subject

他这几年一直钻在学术研究里。

noun · a tool for boring holes, such as an auger

这把钻的动力非常强劲。