alyssum alysson • Alyssum · · · Info · Definitions · Synonyms · Characters · · alyssum · · Text Latin · · Script 7 · · Length 3 · · Syllables Definitions · · · (noun) any garden plant of the genus Alyssum having clusters of small yellow or white flowers. Synonyms: madwort. · · Noun Definition 1 (noun) a genus of the family Cruciferae. Synonyms: Alyssum, genus Alyssum. · · Noun Definition 2 Synonyms · · · madwort · · Synonym 1 Characters · · a latin small letter a U+0061 l latin small letter l U+006C m latin small letter m U+006D s latin small letter s U+0073 u latin small letter u U+0075 y latin small letter y U+0079