1 [mass noun] synthetic resin or plastic consisting of polyvinyl chloride or a related polymer, used for wallpapers and other covering materials and for gramophone records:the vinyl is cut to size with a craft knife [as modifier]:vinyl floor tiles
vinyl used as the standard material for records:fans had to wait almost a year before the song eventually appeared on vinyl
2 /also ˈvʌɪnʌɪl, -nɪl/ [as modifier] Chemistry of or denoting the unsaturated hydrocarbon radical CHCH2, derived from ethylene by removal of a hydrogen atom:a vinyl group