A dowel is a cylindrical ROD, usually made of wood, metal, or plastic, that is used to join two pieces of material together. The three crossword solutions for the term 'dowel, e.g.' are ROD, PIN, and PEG. A ROD is a long, thin, cylindrical object, while a PIN is a thin, pointed piece of metal, and a PEG is a short, pointed piece of wood or metal. All three of these items can be used as dowels to join two pieces of material together.