Definition of above adverb from the Oxford Advanced Learner's Dictionary

      

    above

     adverb
    adverb
    BrE BrE//əˈbʌv//
     
    ; NAmE NAmE//əˈbʌv//
     
     
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  1. 1  at or to a higher place Put it on the shelf above. Seen from above the cars looked tiny. They were acting on instructions from above (= from somebody in a higher position of authority).
  2. 2  greater in number, level or age increases of 5% and above A score of 70 or above will get you an ‘A’. children aged 12 and above Which Word?above / over Above and over can both be used to describe a position higher than something:They built a new room above/​over the garage. When you are talking about movement from one side of something to the other, you can only use over:They jumped over the stream. Over can also mean ‘covering’:He put a blanket over the sleeping child. Above and over can also mean ‘more than’. Above is used in relation to a minimum level or a fixed point:2 000 feet above sea level Temperatures will not rise above zero tonight. Over is used with numbers, ages, money and time:He’s over 50. It costs over £100. We waited over 2 hours.
  3. 3earlier in something written or printed As was stated above… See above, page 97.
  4. Word Origin Old English abufan (as an adverb), from a- ‘on’ + bufan (from bi ‘by’ + ufan ‘above’).
See the Oxford Advanced American Dictionary entry: above