Billy is normally a nickname for William. William (from old German, with Wilhelm) has the meaning "determined protector".
If you mean by your question how this name written in Arabic --> Billy Magdadaro : بيلي مغدادارو
a boy goat i guess or do you mean the name a billy or a buck are both names buck is more formal. billy is semislang
Billy Name goes by Billy Goat Clinic.
Billy Silva's birth name is Billy Campbell.
If you mean the singer of the band billy talent (singers name is ben kowalewicz), then he has 1 brother
Billy Name's birth name is William Linich.
Bella's dad's name is Charley Swan. (played by Billy Burk in the movie) It is Charlie Swan.
Billy Vaughan's birth name is Billy Scott Vaughan.
Billy Stegall's birth name is Billy Howard Stegall.
Billy Lovelady's birth name is Billy Nolan Lovelady.
Billy Drago's birth name is Burrows, Billy Eugene.
Billy Grabarkewitz's birth name is Billy Cordell Grabarkewitz.