Japanese

Noun

二重底 ‎(hiragana にじゅうぞこ, romaji nijūzoko, historical hiragana にぢゆうぞこ)

1. double sole
2. double bottom

References

1. ↑ 2006, 大辞林 (Daijirin), Third Edition (in Japanese), Tōkyō: Sanseidō, ISBN 4-385-13905-9
2. ↑ 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