Definition of wrench noun from the Oxford Advanced American Dictionary

     

    wrench

     noun
    noun
    NAmE//rɛntʃ//
     
     
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  1. 1[countable] a metal tool with a specially shaped end for holding and turning things, including one that can be adjusted to fit objects of different sizes, also called amonkey wrench
  2. 2[singular] pain or unhappiness that you feel when you have to leave a person or place that you love Leaving home was a terrible wrench for me.
  3. 3[countable, usually singular] a sudden and violent twist or pull She stumbled and gave her ankle a painful wrench.
  4. Idioms
    throw a (monkey) wrench in/into the works(informal)
     
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    to do something to spoil someone's plans
See the Oxford Advanced Learner's Dictionary entry: wrench