opal glass opal blue • opal gray · · · Info · Definitions · Characters · · opal glass · · Text Common · · Latin · · Scripts 10 · · Length Definitions · · · (noun) a milky white translucent or opaque glass. Synonyms: milk glass. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 g latin small letter g U+0067 l latin small letter l U+006C o latin small letter o U+006F p latin small letter p U+0070 s latin small letter s U+0073