The locution refers to a pending task that was not done by carelessness, by slobenhood that gives a bad bill, with yarns as a leftover thread and untied in a fabric. It comes from the nautical where an aduja should not have a chicote come out of the roll. Other definitions refer to a wider use of the phrase for "recognizable data to uncover a sloat crime", which is the same phrase applied in another situation. See end, loose.
