The acronym NSK has several meanings: Neue Slowenische Kunst, a Slovenian art collective - also known for its NSK state. This page is all about abbreviation, acronym and meaning of the given term NSK. NSK Stands For : Narrow-Frequency Shift Keying. Looking for the definition of NSK? Find out what is the full meaning of NSK on Abbreviations. NSK - Frequently Asked Questions.