日本刀 Traditional form: 日本刀 Pinyin (reading): Rìběndāo Definitions: Japanese sword katana Characters: 日 - sun; day; daytime 本 - root, origin, source; basis 刀 - knife; old coin; measure Traditional characters: 日 - sun; day; daytime 本 - root, origin, source; basis 刀 - knife; old coin; measure