Japanese

Noun

長月 ‎(hiragana ながつき, romaji nagatsuki)

1. (archaic) the ninth month of the lunar calendar
2. (poetic) the long month; September

References

1. ↑ 1998, NHK日本語発音アクセント辞典 (NHK Japanese Pronunciation Accent Dictionary) (in Japanese), Tōkyō: NHK, ISBN 978-4-14-011112-3