square knot

English Thesaurus

1. a double knot made of two half hitches and used to join the ends of two cords (noun.artifact)

hypernym	:	knot,
definition	:	any of various fastenings formed by looping and tying a rope (or cord) upon itself or to another rope or to another object (noun.artifact)

hyponym	:	flat knot, reef knot,
definition	:	a square knot used in a reef line (noun.artifact)