Loggerhead has several meanings:
1. A stupid person: This is the most common meaning. For example, "He's a complete loggerhead, he can't even tie his own shoelaces."
2. A type of sea turtle: The Loggerhead Sea Turtle is a large, endangered species found in warm waters around the world.
3. A tool used for making holes in wood: This is a less common meaning and refers to a specific tool used in woodworking.
If you were looking for a specific meaning of "loggerhea," please clarify your query. It's possible you meant something else.