Japanese
Noun
骨髄 (hiragana こつずい, romaji kotsuzui)
- bone marrow
- one's innermost depths, the bottom of one's heart
- the most important point
References
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↑ 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