gasbag Gasan • gascoigny · · · Info · Definitions · Synonyms · Characters · · gasbag · · Text Latin · · Script 6 · · Length Definitions · · · (noun) a boring person who talks a great deal about uninteresting topics. Synonyms: windbag. · · Noun Definition 1 (noun) the bag containing the gas in a balloon. Synonyms: envelope. · · Noun Definition 2 Synonyms · · · windbag · · Synonym 1 envelope · · Synonym 2 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 g latin small letter g U+0067 s latin small letter s U+0073