Y1R Full Form. Full Meaning of Y1R Find long form and abbreviation, slang or definition of Y1R. What does Y1R mean? What does Y1R 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.