Give Baby A Name That Will Protect Them No Matter What! Billee Is A Charming Feminine Name Of German Origin. Interestingly, Billee Is Derived From The Old German Name Wilhelmina, And Means “determined Protector.” Not Only Will This Name Serve As A Shield For Your Little Warrior, But It Might Also Inspire Them To Use Their Powers To Help And Protect Others. With Various Alternative Spellings, Billee Is A Unique Choice For Baby, And Nicknames Like Bee, Bill, And Lee Are Ideal For Your Little Badass!