root ca·nal
noun/ˈruːt kənæl/
/ˈruːt kənæl/
- the space inside the root of a tooth
（牙）根管 - [countable, uncountable] an operation that involves removing infected tissue from the space inside the root of a tooth and replacing it with a substance that will protect it
（牙）根管 - I've had two root canals so far.
到目前为止我已经做过两次根管治疗了。 - I'd rather have root canal than sit through another boring meeting.
我宁愿接受根管治疗，也不愿再参加一场无聊的会议。
- I've had two root canals so far.