Definition of 二十三夜 (にじゅうさんや)
にじゅうさんや
                        二十三夜
にじゅうさんや
nijuusan-ya
noun
1.
23rd night of a lunar month (esp. 8th month)
2.
moon-waiting party held on 23rd night of a lunar month
Related Kanji
| 二 | two, two radical (no. 7) | 
| 十 | ten | 
| 三 | three | 
| 夜 | night, evening |