blacken /ˈblækən/ TEM4 ( blackening, blackened, blackens )

• 1. 

  V-T/V-I To blacken something means to make it black or very dark in colour. Something that blackens becomes black or very dark in colour. 使变黑; 变黑

  例：

  The married women of Shitamachi maintained the custom of blackening their teeth.

  下町的已婚妇女保留了染黑牙齿的习俗。

• 2. 

  V-T If someone blackens your character, they make other people believe that you are a bad person. 诋毁

  例：

  They're trying to blacken our name.

  他们在设法败坏我们的名声。