horsetail family horsetail • horsetail lichen · · · Info · Definitions · Characters · · horsetail family · · Text Common · · Latin · · Scripts 16 · · Length 6 · · Syllables Definitions · · · (noun) sole surviving family of the Equisetales: fern allies. Synonyms: Equisetaceae, family Equisetaceae, horsetail family. · · Noun Definition 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 h latin small letter h U+0068 i latin small letter i U+0069 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 s latin small letter s U+0073 t latin small letter t U+0074 y latin small letter y U+0079