It is a dishwasher including a cabinet configured to form an external wash bowl provided in the dishwasher cabinet, and a jet nozzle configured to jet wash water in the wash bowl, where the jet nozzle includes a plurality of nozzle inner walls provided therein to form a passageway through which the wash water passes, and having a plurality of internal passageway walls provided to have vertical sectioned arc shapes for a water flow direction of wash. Due to this configuration, a blasting force may be high and the washing efficiency may also be improved.
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