onionskin onionpeel • oniony · · · Info · Definitions · Synonyms · Characters · · onionskin · · Text Latin · · Script 9 · · Length Definitions · · · (noun) a thin strong lightweight translucent paper used especially for making carbon copies. Synonyms: flimsy. · · Noun Definition 1 Synonyms · · · flimsy · · Synonym 1 Characters · · i latin small letter i U+0069 k latin small letter k U+006B n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073