本刀 ぽんとう Also written ポン刀 Meanings Noun Japanese sword (usu. single-edged and curved); Japanese bladed weapon (yakuza slang) See also: 日本刀 (にほんとう). Kanji 本 origin 刀 katana. Read as トウ. Words containing 本刀 日本刀 (にほんとう) Japanese sword (usu. single-edged and curved) Word lists Slang Jinuma: Japanese Dictionary · Word lists