Definition of low noun from the Oxford Advanced American Dictionary

     

    low

     noun
    noun
    NAmE//loʊ//
     
     
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    level/value
  1. 1 a low level or point; a low figure The yen has fallen to an all-time low against the dollar. The temperature reached a record low last night. The government's popularity has hit a new low.
  2. difficult time
  3. 2a very difficult time in someone's life or career The breakup of her marriage marked an all-time low in her life. We all experience highs and lows in life.
  4. weather
  5. 3an area of low pressure in the atmosphere Another low is moving in from the Atlantic. opposite high
See the Oxford Advanced Learner's Dictionary entry: low