北海 Traditional form: 北海 Pinyin (reading): Běi Hǎi Definitions: North Sea (in Europe) historical name for several bodies of water, including Lake Baikal 貝加爾湖/贝加尔湖 ( Bèijiā'ěr Hú), Russia Characters: 北 - north; northern; northward 海 - sea, ocean; maritime Traditional characters: 北 - north; northern; northward 海 - sea, ocean; maritime