soapberry soapbark • soapbox · · · Info · Definitions · Synonyms · Characters · · soapberry · · Text Latin · · Script 9 · · Length Definitions · · · (noun) a tree of the genus Sapindus whose fruit is rich in saponin. Synonyms: soapberry tree. · · Noun Definition 1 Synonyms · · · soapberry tree · · Synonym 1 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 e latin small letter e U+0065 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 y latin small letter y U+0079