often capitalized, often attributive
1
a : the 6th letter of the English alphabet
b : a graphic representation of this letter
c : a speech counterpart of orthographic f
2
: the fourth tone of a C-major scale
3
: a graphic device for reproducing the letter f
4
: one designated f especially as the sixth in order or class
5
a : a grade rating a student's work as failing
b : one graded or rated with an F
6
: something shaped like the letter F