horse mushroom horsemonger • horse nettle · · · Info · Definitions · Synonyms · Characters · · horse mushroom · · Text Common · · Latin · · Scripts 14 · · Length 3 · · Syllables Definitions · · · (noun) coarse edible mushroom with a hollow stem and a broad white cap. Synonyms: horse mushroom, Agaricus arvensis. · · Noun Definition 1 Synonyms · · · agaricus arvensis · · Synonym 1 Characters · · space U+0020 e latin small letter e U+0065 h latin small letter h U+0068 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 u latin small letter u U+0075