Definition of "Wei"

Wei¹

proper noun
1. (historical) An ancient Chinese march during the Zhou dynasty
2. (historical) Liang, the realm of the earlier march after its elevation to a kingdom
3. (historical) A kingdom during the Three Kingdoms interregnum following China's Han dynasty.
  Quotations
  After the Empire of Han was taken over by Wei (220) in the fifth year of the Ch’ing-lung period (237), the statue was moved from Ch’ang-an, the capital of Han, to Hsü-ch’ang, the capital of Wei, in modern Honan province.
  1979, Kuo-ch'ing Tu, edited by William Schultz, Li Ho‎, Twayne Publishers, page 59

Wei²

proper noun
1. (historical) An ancient Chinese duchy during the Zhou dynasty

Wei³

proper noun
1. A river in China, a tributary of the Yellow River.