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Jyutping ngaai4 zau1
Pinyin ㄧㄞˊ zhōu

Definitions (Wiktionary)
  1. name, historical
    Yazhou (former prefecture that covered all of Hainan Island, China, and later restricted its area of administration to part of the island)
  2. name
    Yazhou (a district of Sanya, Hainan, China)

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Jyutping ngaai4 zau1
Pinyin yá zhōu

Definitions (CC-CEDICT)
  1. ancient name for Hainan Island 海南島|海南岛[Hai3 nan2 Dao3]
Definitions (Wiktionary)
  1. name
    Yazhou (a district of Sanya, Hainan, China)
  2. name, historical
    Yazhou (former prefecture that covered all of Hainan Island, China, and later restricted its area of administration to part of the island)