a tool for widening or finishing drilled holes 扩空钻,铰刀;钻空器 ■an instrument for scraping the burrs off the inside of water pipes (水管)刮垢器 ■a blade for scraping the carbon layer from the inside of the bowl of a smoking pipe (烟斗)刮垢刀 ■North American term for lemon-squeezer (北美)。 同 lemon-squeezer