sailor's breastplate

English Thesaurus

1. a knot in the rope used to drag a gun carriage (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)

part meronym	:	prolonge,
definition	:	a rope fitted with a hook and used for towing a gun carriage (noun.artifact)