Wiktionary
binding knot
n. A knot that may be used to keep an object or multiple loose objects together, using a string or a rope that passes at least once around them.
Usage examples of "binding knot".
Her fingers had discovered no binding knot that could be plucked free, and though she wiggled around in a continuous effort to secure the ever-evasive comfort of her crowded straw bed, the jolting of the wheels rolling over stones and into holes made the ride almost unbearable.