三み十そ日か蕎麦そばMeaningsNoun1. soba eaten at the end of the month (esp. at the end of the year)Other spellings晦日みそか蕎麦そば晦日みそかそばUsage share unknownKanji used三three十ten日sun蕎buckwheat麦wheatKanji in other spellings晦last day of the monthPitch accentみそかそばComposed of三み十そ日かlast day of the monthNoun蕎麦そばbuckwheat (Fagopyrum esculentum); soba; Japanese buckwheat noodles; Chinese-style wheat noodlesNoun