Meaning of D in English
The fourth letter of the English alphabet, and a vocal consonant. The English letter is from Latin, which is from Greek, which took it from Ph/nician, the probable ultimate origin being Egyptian. It is related most nearly to t and th; as, Eng. deep, G. tief; Eng. daughter, G. tochter, Gr. qyga`thr, Skr. duhitr.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012