n.a double knot made of two half hitches and used to join the ends of two cords

Square Knot
The spun square knot is the spun granny knot
The looped square knot: a useful suture method.
The arthroscopic square knot: fiction or fact?
Beyond the square knot: a novel knotting technique for surgical use
Tensile strength of a surgeon's or a square knot
The Symplectic Floer Homology of the Square Knot and Granny Knots
The arthroscopic square knot: a biomechanical comparison with open and arthroscopic knots.
The half-hitch knot: a rational alternative to the square knot
Laparoscopic intracorporeal cinch knots: changing the square knot paradigm