Small knife - Kogatana

Japanese: 小刀 - こがたな

〘Noun〙① A small sword. A small blade used for everyday chores. Kiridashi. Knife. ※Azuma Kagami - October 13, 1190, Kenkyu 1, "Ai _ni fuku kodachi o sake sowari _ichi " ② A small sword attached to a kozuka attached to the sheath of a waist sword or katana . It was used in the military to take the head of an enemy or to make a hole to remove the strap from a neck tag. There were kozuka with a hole on the top and a ring on the top, and the sword was inserted into this. Ura -zashi . Soe-go . ※Taiheiki (late 14th century), chapter 39 "The teeth of a tachi that had been hammered into a sasaranoko were re-sharpened with a kodachi."

Shou-tou Seutau [small knife]

〘 noun 〙 A small sword. A short sword. Also, a wakizashi. ※Oeihon Analects (1420) Yang Hu 17 "When _{splitting a chicken} , a small knife should be used" [Chin Shu - Shizu Chronicle]

Chisha-gatana [small knife]

〘Noun〙 A variation of the word "chiisagatana (small knife)". [Kata-gen (1650)]

Source: The Selected Edition of the Japanese Language Dictionary About the Selected Edition of the Japanese Language Dictionary Information

Japanese:

〘名〙① 小さな刀。日常の雑用に用いる小さな刃物。きりだし。ナイフ。※吾妻鏡‐建久元年（1190）一〇月一三日「相_二副小刀於鮭楚割_一」② 腰刀や打刀の鞘(さや)にそえた小柄(こづか)に付属する小さな刀。軍中で敵の首をとったり、首札の緒をぬくための穴をあけたりするのに用いた。軍中に差す小柄には上に穴をつけたものと環をつけたものとあり、そこへ差した。裏差(うらざし)。副子(そえご)。※太平記（１４Ｃ後）三九「編木子(ささらのこ)の如く叩きなしたる太刀の歯本を小刀にて削り直し」