J14 Full Form. Full Meaning of J14 Find long form and abbreviation, slang or definition of J14. What does J14 mean? What does J14 stand for? We are providing world largest and most comprehensive acronyms, names, abbreviations database directory on the Internet. Our data base contains more than 8,00,000 terms abbreviations and acronyms. You can also search unique terms more than 4,00,000 general Comprehensive words.