We found 13 dictionaries that define the word d ring:

General (8 matching dictionaries)

1. D ring: Merriam-Webster
2. D-ring: Wordnik
3. D-ring: Wiktionary
4. D-ring: Webster's New World College Dictionary, 4th Ed.
5. D-ring: Infoplease Dictionary
6. d-ring, d ring: Dictionary.com
7. D-ring, D ring: Wikipedia, the Free Encyclopedia
8. D ring: Merriam-Webster

Computing (1 matching dictionary)

9. D Ring: Encyclopedia

Science (1 matching dictionary)

10. D Ring: Extragalactic Astronomy

Slang (1 matching dictionary)

11. d-ring: Urban Dictionary

Tech (2 matching dictionaries)

12. AUTOMOTIVE TERMS (No longer online)
13. Explosives (No longer online)

Definitions from Wiktionary (D ring) ▸ noun:  Alternative form of D-ring [A piece of metal shaped like the letter D, used primarily as a lashing point.] ▸ Words similar to d ring ▸ Usage examples for d ring ▸ Idioms related to d ring ▸ Wikipedia articles (New!) ▸ Words that often appear near d ring ▸ Rhymes of d ring ▸ Invented words related to d ring