The name Billy is basically a nickname. It is used as a nickname for the name William. The Name William is of old Germanic origin and means harnessed with a gilded helmet or in simple words protection.
What Does My Name Billy Mean?
It means king...
There are Many different ways that you can look up your own name. One funny amusing way is to look it up on Urban Dictionary. Another is just to type it on Google saying, "What does Billy Mean?" I have done this with my name, and found out many things that it means. Just try it, it's successful and it works!