What is all hail meaning?

All hail is a phrase that is commonly used to express praise or acclaim for someone or something. The origin of this phrase can be traced back to Old English, where "hail" meant to greet or salute. "All hail" was used as a way to give respect or allegiance to a ruler or leader. In modern times, "all hail" is often used in a sarcastic or humorous way to mock someone who is being overly praised or admired. It can also be used to express admiration for a popular celebrity or public figure. Overall, "all hail" is a phrase that is used to convey respect, admiration, or adulation for someone or something.