noun, symbol
noun (also b) (plural B's, b's )
1 [C,U] the second letter of the English alphabet:
'Butter' begins with (a) B / 'B'.
2 (B) [C,U] (music) the 7th note in the scale of C MAJOR
3 (B) [C,U] the second highest mark/grade that a student can get for a piece of work:
She got (a) B in / for History.
4 (B) [U] used to represent the second of two or more possibilities:
Shall we go for plan A or plan B?
5 (B) [U] 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.
seealsoB-ROAD
IDIOMS see A
symbol used in Britain before a number to refer to a particular secondary road:
the B1224 to York
