noun
or C , pl c's or cs or C's or Cs
the third letter of the English alphabet [count]
[count] :the Roman numeral that means
a musical note or key referred to by the letter C :the first tone of a C-major scale [count]
[count] :a grade that is given to a student for doing average work
used to refer to the third of three or more people, places, or things that are being considered