tar

1. N-UNCOUNT Tar is a thick black sticky substance that is used especially for making roads. 沥青

The oil has hardened to tar. 油已硬化成沥青了。

2. N-UNCOUNT Tar is one of the poisonous substances contained in tobacco. (烟草中的) 焦油

...strict guidelines as to the amount of tar contained in cigarettes. …关于香烟中焦油含量的严格的指导原则。

3. V to coat with tar 用焦油或沥青涂抹