a D-shaped, usually metal ring of various sizes, used on clothing or other articles as a closure, a means of securing straps or objects, or a decoration.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use D-ring in a sentence
A beener or D ring was attached to each trainee via a rappel seat that went around his waist and upper thighs.
When he's in d' ring he can't be still a minute, can't let himself rest between rounds, see?The Definite Object | Jeffery Farnol