noun
leather strap; leather cord; leash
A strip or cord made of leather, used for tying, fastening, or as a leash. The word itself is neutral and descriptive.
犬の首輪に革紐をつけて散歩する。
I attach a leather leash to the dog's collar and go for a walk.
このペンダントは革紐でできている。
This pendant is made with a leather cord.
Uses 皮 (skin/hide), sometimes seen but 革 is more specific for tanned leather.
Compound of 革 (kawa, 'leather') and 紐 (himo, 'string, cord').