Blue

Etymology
surname, Americanized from or its  cognate.

Proper noun

 * 1) . An anglicization of.
 * , typically used in conjoined names like Bonnie Blue or Blue Bell.
 * 1) A male nickname, occasionally used as a formal given name.  Nickname for a person with ginger hair.

Noun

 * 1) A letterman at Oxford or Cambridge.
 * 2)  A member of the Royal Horse Guards (which merged with the 1st Dragoons in 1969)