D, d

/dee/, n., pl. D's or Ds, d's or ds.

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

2. any spoken sound represented by the letter D or d, as in dog, ladder, ladle, or pulled.

3. something having the shape of a D.

4. a written or printed representation of the letter D or d.

5. a device, as a printer's type, for reproducing the letter D or d.