sump /sʌmp/

• 1. 

  N-COUNT A sump is a low-lying open area where waste water gathers. 水池

• 2. 

  N-COUNT A sump is a deep cave which is often filled with water. 集水坑

• 3. 

  N-COUNT The sump is the place under an engine which holds the engine oil. (发动机下面的)集油槽 [英国英语]