Definition of RATTLY. : likely to rattle: making a rattle. See rattly defined for kids.
The safe harbor refers to the time period between 10 p.m. and 6 a.m., local time. During this time period, a station may air indecent and/or profane material. In contrast, there is no safe harbor for the broadcast of obscene material.
A safe harbor is a provision in a law or regulation that affords protection from liability or penalty under specific situations or if certain conditions are met. (Business Dictionary.com). Sometimes a safe harbor reduces liability if good faith is demonstrated.