Ginkgo - Ginkgo

...It is common to have grooves on the sides that do not have a ridge, and sometimes Sanskrit characters, sharp swords, Kurikara dragons, or names of gods and Buddhas are carved on the ridge as well. A plain yari with a blunt tip rather than a sharp one is called a "Ginkgo tip," and one with a flat, broad curve is called a "Sasaho." In addition, a yari with side handles on both sides close to the "kerakubi" to entangle the opponent's weapon is called a "Jumonji yari," and one with a particularly curved side handle is called a "Kama yari."...

*Some of the terminology that mentions "Ginkgo" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…鎬を立てない面には樋をつけるのが普通で，ときには鎬の上にも梵字や利剣，俱利迦羅（くりから）竜，神仏号などを彫り込んでいる。素鑓の穂先を鋭角にせずに鈍角に仕上げたのを〈銀杏穂（ぎんなんぼ）〉といい，扁平にして幅広に曲線をもたせたのを〈笹穂（ささほ）〉と呼んでいる。なお相手の得物をからむために〈けらくび〉に近く横手を左右に設けたのを〈十文字鑓〉といい，特に横手を湾曲させたのを〈鎌鑓〉という。…

※「銀杏穂」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報