Definition of well noun from the Oxford Advanced American Dictionary

     

    well

     noun
    noun
    NAmE//wɛl//
     
     
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  1. 1a deep hole in the ground from which people obtain water. The sides of wells are usually covered with brick or stone and there is usually some covering or a small wall at the top of the well. to dig/sink a well
  2. 2= oil well
  3. 3a narrow space in a building that drops down from a high to a low level and usually contains stairs or an elevator see also stairwell
See the Oxford Advanced Learner's Dictionary entry: well