/wuy/ , n. , pl. Y's or Ys, y's or ys .
1. the 25th letter of the English alphabet, a semivowel.
2. any spoken sound represented by the letter Y or y, as in yet, city, or rhythm.
3. something having the shape of a Y.
4. a written or printed representation of the letter Y or y.
5. a device, as a printer's type, for reproducing the letter Y or y.