papaver somniferum papaver rhoeas • papaw · · · Info · Definitions · Synonyms · Characters · · papaver somniferum · · Text Common · · Latin · · Scripts 18 · · Length 7 · · Syllables Definitions · · · (noun) southwestern Asian herb with greyish leaves and white or reddish flowers; source of opium. Synonyms: opium poppy, Papaver somniferum. · · Noun Definition 1 Synonyms · · · opium poppy · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 f latin small letter f U+0066 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075 v latin small letter v U+0076