Wiktionary
ashley's bend
n. A type of bend knot which has proven stability and grip.
Wikipedia
Ashley's bend
Ashley's bend is a knot used to securely join the ends of two ropes together. It is similar to several related bend knots which consist of two interlocking overhand knots, and in particular the alpine butterfly bend. These related bends differ by the way the two constituent overhand knots are interlocked.