torture          
 noun uk/ˈtɔː.tʃər/ us/ˈtɔːr.tʃɚ/
C2 [ U ]拷打;拷问;折磨;虐待 
the act of causing great physical or mental pain in order to persuade someone to do something or to give information, or to be cruel to a person or animal
  Half of the prisoners died after torture and starvation. 半数的囚犯死于拷打和饥饿。 
 He revealed the secret under torture. 在严刑拷打之下他吐露了秘密。 
 C1 [ C or U ] informal折磨,煎熬 
a very unpleasant experience
  The rush-hour traffic was sheer torture as usual. 交通高峰期像往常一样简直就是一种煎熬。 
 - More examples
 - Even under torture, he refused to deny his faith.
 - They used sleep deprivation as a form of torture.
 - Human rights campaigners have discovered documentary evidence of torture.
 - She was subjected to torture and lengthy interrogations.
 - The torture failed to break the prisoner's spirit.
 
torture          
verb [ T ] uk/ˈtɔː.tʃər/ us/ˈtɔːr.tʃɚ/
C2 拷打;拷问;折磨;虐待
to cause great physical or mental pain to someone intentionally
  It is claimed that the officers tortured a man to death in a city police station. 据称在一所市警察局里警察将一名男子拷打致死。 
  使精神上受到折磨;使痛苦;使苦恼
to cause mental pain
  He tortured himself for years with the thought that he could have stopped the boy from running into the road. 他本可以阻止那个男孩跑到马路上去的想法多年来一直折磨着他。 
 - More examples
 - He was tortured in prison.
 - They were tortured until they revealed where the weapons were hidden.
 - If they catch him, they will torture him.
 - As a child, he liked to torture insects.