blackmail

名词 blackmail:

1. extortion of money by threats to divulge discrediting information

动词 blackmail:

1. exert pressure on someone through threats
   同义词：blackjack, pressure
2. obtain through threats

1. It's a clear case of blackmail!
   这显然是敲诈！
2. He can be ruthless in getting what he wants, but I believe he would stop short of blackmail.
   他这个人为达到目的是心黑手辣的，但我认为他还不至於使用敲诈手段。
3. She was sent to prison for blackmail.
   因犯敲诈勒索罪她被送进监牢。

black.mail

n.（名词）

Extortion of money or something else of value from a person by the threat of exposing a criminal act or discreditable information.
黑函，敲诈函：通过揭露犯罪行为或提供不可信资料等手段威胁强索某人钱财或值钱之物
Something of value extorted in this manner.
勒索之物：通过此种手段强取的有价值之物
Tribute formerly paid to freebooters along the Scottish border for protection from pillage.
勒索贡物：从前为防止海盗抢劫，沿苏格兰边境向海盗上贡之物

来源：
black
black
mail 3
mail3

【引伸】
black.mail.
v.（动词）
black.mail.er
n.（名词）