Definition of middle noun from the Oxford Advanced American Dictionary

      

    middle

     noun
    noun
    NAmE//ˈmɪdl//
     
     
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  1. 1 the middle [singular] the part of something that is at an equal distance from all its edges or sides; a point or a period of time between the beginning and the end of something a lake with an island in the middle He was standing in the middle of the room. The phone rang in the middle of the night. This chicken isn't cooked in the middle. His picture was right (= exactly)in the middle of the front page. I have a pain in the middle of my back. Take a sheet of paper and draw a line down the middle. I should be finished by the middle of the week. You can't leave in the middle of the meeting! I like a story with a beginning, a middle, and an end. When they quarrel, I am often caught in the middle.
  2. 2 [countable, usually singular] (informal) a person's waist He grabbed her around her middle. I've put on weight around the middle.
  3. Idioms
    be in the middle of something/of doing something
     
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    to be busy doing something They were in the middle of dinner when I called. I'm in the middle of writing a difficult letter.
    the middle of nowhere(informal)
     
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    a place that is a long way from other buildings, towns, etc. She lives on a small farm in the middle of nowhere.
    split/divide something down the middle
     
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    to divide something into two equal parts The town was split down the middle over the referendum (= half supported it, half did not).
See the Oxford Advanced Learner's Dictionary entry: middle