The Collaborative International Dictionary
Cuckold's knot
Cuckold's knot \Cuck"old's knot`\ (k?k"?ldz n?t`). (Naut.)
A hitch or knot, by which a rope is secured to a spar, the
two parts of the rope being crossed and seized together; --
called also cuckold's neck.
--Ham. Nav. Encyc.