fall armyworm fall apart • fall army worm · · · Info · Definitions · Synonyms · Characters · · fall armyworm · · Text Common · · Latin · · Scripts 13 · · Length 4 · · Syllables Definitions · · · (noun) larva of a migratory American noctuid moth; destroys grasses and small grains. Synonyms: fall armyworm, Spodoptera frugiperda. · · Noun Definition 1 Synonyms · · · spodoptera frugiperda · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 f latin small letter f U+0066 l latin small letter l U+006C m latin small letter m U+006D o latin small letter o U+006F r latin small letter r U+0072 w latin small letter w U+0077 y latin small letter y U+0079