F, f

/ef/, n., pl. F's or Fs, f's or fs.

1. the sixth letter of the English alphabet, a consonant.

2. any spoken sound represented by the letter F or f, as in fat, differ, or huff.

3. something having the shape of an F.

4. a written or printed representation of the letter F or f.

5. a device, as a printer's type, for reproducing the letter F or f.