Definition: Slang term for a putter, because putter faces are considered flat relative to other golf clubs.
Reality check: Most putters are not, in fact, flat. In other words, putters, too, are lofted. You can find putters with zero degrees of loft (true "flatsticks"), but most putters have 3-4 degrees of loft to their faces.
Alternate Spellings: Flat stick
