the drum 40 may further have a scoop 42 which is formed at one side of each of the drum holes 41 the scoop 42 may have a shape that is concave at the outside of the drum 40 and is convex at the inside thereof the scoop 42 is preferably formed at one side of the drum hole 41 such that the wash water in the tub 30 may be guided to the drum hole 41 only when the drum 40 rotates in one direction here the one direction in which the drum 40 rotates is a clockwise direction when the drum 40 rotates clockwise the scoop 42 is preferably disposed in front of the drum hole 41 in the clockwise direction that is only when the drum 40 rotates clockwise the scoop 42 guides the wash water in the tub 30 to the drum hole 41 so that the wash water may flow into the inner space in each of the lifters 45 through the associated drum hole 41 the lifter 45 has a lifter hole 45 a through which the wash water introduced into the inner space from the tub 30 through the drum hole 41 is sprayed on laundry at a predetermined position to which the drum 40 rotates that is the wash water which is introduced into the inner space of the lifter 45 through the drum hole 41 at position a illustrated in fig2 is sprayed on laundry.