noun, plural 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.