Abstract: A dishwasher includes a tub defining a washing space, a sump disposed below the tub and configured to store washing water received from the tub, a pump configured to supply the washing water from the sump to the washing space, and a spray arm configured to discharge the washing water from the pump into the washing space. A channel defined inside the spray arm is configured to spray the washing water or the washing water including microbubbles into the washing space.

Abstract: A dishwasher according to one embodiment may comprise a storage part for storing an object to be washed. The storage part comprises: a base in which a plurality of horizontal bars and a plurality of vertical bars intersect each other; a supporter protruding from the base; and a first holder mounted to the supporter and provided so as to be rotatable with respect to the supporter, wherein the first holder may be supported by the supporter so as to maintain a posture at a set angle with respect to the supporter.