刀 is an East Asian word which means sabre, knife, or certain types of sword. 刀 may refer to: Dao (sword), a category of single-edge Chinese swords primarily used for slashing and chopping Japanese sword Katana, a type of single-edged Japanese sword, used by the samurai Kangxi Radical 18 The Blade, a 1995 Hong Kong film slang term for US dollar See also 剣 (disambiguation)