Definition of blade noun from the Oxford Advanced American Dictionary

      

    blade

     noun
    noun
    NAmE//bleɪd//
     
     
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  1. 1the flat part of a knife, tool, or machine, which has a sharp edge or edges for cutting see also razor blade, switchblade
  2. 2 one of the flat parts that turn around in an engine or on a helicopter the blades of a propeller rotor blades on a helicopter
  3. 3 the flat wide part of an oar (= one of the long poles that are used to row a boat) that goes in the water
  4. 4a single flat leaf of grass Not a blade of grass stirred.
  5. 5the flat metal part on the bottom of an ice skate see also shoulder blade
See the Oxford Advanced Learner's Dictionary entry: blade

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