A small mass of soft material, often folded or rolled, used for padding, stuffing, or packing. A compressed ball, roll, or lump, as of tobacco or chewing gum. A plug, as of cloth or paper, used to retain a powder charge in a muzzleloading gun or cannon. A disk, as of felt or paper, used to keep the powder and shot in place in a shotgun cartridge. Informal A large amount: a wad of troubles. Informal A sizable roll of paper money. Informal A considerable amount of money. To compress into a wad. To pad, pack, line, or plug with wadding. To hold (shot or powder) in place with a wad. To insert a wad into (a firearm). To form into a wad.