Definition of B noun from the Oxford Advanced Learner's Dictionary

     

    B

     noun
    noun
    BrE BrE//biː//
     
    ; NAmE NAmE//biː//
     
    (also b)(pl. Bs, B’s, b’s
    BrE BrE//biːz//
     
    ; NAmE NAmE//biːz//
     
    )
     
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  1. 1 [countable, uncountable] the second letter of the English alphabet ‘Butter’ begins with (a) B/‘B’.
  2. 2 B [countable, uncountable] (music) the 7th note in the scale of C major
  3. 3B [countable, uncountable] the second highest mark/grade that a student can get for a piece of work She got (a) B in/for History.
  4. 4B [uncountable] used to represent the second of two or more possibilities Shall we go for plan A or plan B?
  5. 5B [uncountable] used to represent a person, for example in an imagined situation or to hide their identity Let's pretend A meets B in the park.
  6. see also B-road
    Idioms from one place to another For me a car is just a means of getting from A to B.
See the Oxford Advanced American Dictionary entry: B