The present disclosure relates to a washing machine that may include an integrated tub/drum that has a cylindrical shape or a truncated conical shape, stores water, holds or accommodates laundry together with the water, rotates, and has an opening in one region of the integrated tub/drum; a drum cover that separably or removably covers the opening of the integrated tub/drum and is separable or removable from the opening; and a cover hinge that is at one side and/or edge of the opening of the integrated tub/drum, and rotatably supports one side of the drum cover.