The baffie is the wooden-shafted historical (pre-20th Century) golf club that is most equivalent to a modern 4-wood. A modern 4-wood is not accurately called a baffie, however - the baffie is simply the historical club whose appearance, loft and use match best with today's 4-wood.

Source: British Golf Museum
Also Known As: Baffy, baffing spoon, wooden cleek