According to mythology, Keyur (originally Sanskrit) is a golden jewellery, worn by Krishna on his hand (armlet), between shoulder and elbow (biceps).
However, if you change the spelling of Keyur in Sanskrit from Dirgh "u" to Rasv "u", its meaning changes to peacock, which is a synonym for Mayur.
Keyur is also a commonly used first name for males in the western part of India.
References
Keyur Wikipedia(Text) CC BY-SA