Chinese

Proper noun

東海

1. East China Sea
2. (archaic) Donghai Commandery (in present day Shandong province, China)

References

• 東海 on the Chinese Wikipedia.Wikipedia ^zh
• East China Sea on Wikipedia.Wikipedia
• Luo, Guanzhong ((Can we date this quote?)) Annotated Romance of the Three Kingdoms/Chapter 11, page 139, note 1 (in Mandarin), ISBN 957911305X

Japanese

Pronunciation

• On'yomi
• (Tokyo) とうかい [tòókáí] (Heiban - [0])^[1]
• IPA^(key): [to̞ːka̠i]

Proper noun

東海 ‎(hiragana とうかい, romaji Tōkai)

1. A region of Japan.
2. A surname​.

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

Korean

Proper noun

東海 • ‎(Donghae) ‎(hangeul 동해)

1. Hanja form^? of 동해, “Sea of Japan”.