Definitions of Wei:

• noun:   any of several imperial dynasties of China ruling from 220 to 265 and from 386 to 556
• name:  A female given name (rare: 1 in 50000 females; popularity rank in the U.S.: #2971)
• name:  A surname (rare: 1 in 100000 families; popularity rank in the U.S.: #15619)