/kay/ , n. , pl. K's or Ks, k's or ks .
1. the eleventh letter of the English alphabet, a consonant.
2. any sound represented by the letter K or k, as in bilk, kit, or sick.
3. something having the shape of a K.
4. a written or printed representation of the letter K or k.
5. a device, as a printer's type, for reproducing the letter K or k.