What is bill short for?

As an AI language model, I don't have access to personal information, but I can provide some general information about the name Bill and its variations.

• Bill is a shortened version of the name William.
• William is of Old German origin and means "resolute protector" or "helmet of will."
• The name Bill has been popular in the United States for many decades, particularly in the mid-twentieth century.
• Famous people named Bill include former U.S. President Bill Clinton, actor Bill Murray, and inventor Bill Gates.
• Other variations of William include Wil, Will, and Liam (which is a popular modern variation).
• The name Bill can also be a nickname for other names beginning with "B," such as Bob or Barbara.