/jay/ , n. , pl. J's or Js, j's or js .
1. the tenth letter of the English alphabet, a consonant.
2. any spoken sound represented by the letter J or j, as in just, major, or rajah.
3. something having the shape of a J.
4. a written or printed representation of the letter J or j.
5. a device, as a printer's type, for reproducing the letter J or j.