d

d [ di ] (plural d's) or D (plural D's) noun count or uncount

1. ) the fourth letter of the English alphabet. D is a consonant.

2. ) D the second note in the musical SCALE of C major

3. ) D a grade that a teacher gives to a student's work to show that it is below average

4. ) D the ROMAN NUMERAL for 500

=> D AND C, D-DAY