The word "whence" is an old-fashioned term used to mean "from where" or "from what place." It often appears in literary or formal contexts and is typically used to refer to the origin of something or the source of information.
The word "whence" originates from Middle English, derived from the combination of "when" (meaning "where") and the prefix "wh-" which is related to various interrogative forms in Old English. It has retained a form similar to its Old English roots.