Pennisetum pennisetum • pennisetum americanum · · · Info · Definitions · Characters · · Pennisetum · · Text Latin · · Script 10 · · Length 4 · · Syllables Definitions · · · (noun) a genus of Old World grasses. Synonyms: genus Pennisetum. · · Noun Definition 1 Characters · · P latin capital letter p U+0050 e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075