Japanese

Noun

海鼠 ‎(hiragana なまこ, romaji namako)

1. sea cucumber
2. sea slug

References

1. 1 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