Boshi
The name of the hardened edge at the point of a blade.
Hamon
The pattern formed on the hardened edge on a Japanese sword.
Hamachi
The notch which marks the beginning of the sharpened edge of the blade.
Ji
The blade surface above the ‘hamon.’
Kissaki
The point of the blade.
Mei
The Signature of the maker.
Meguki-ana
A rivet hole in the metal where the handle will be.
Muni
Surface at the back of the sword.
Muni-machi
The notch marking the top of the tang opposite the ‘hamachi’
Nakago
The Tang.
Shinogi
Ridgeline.
Shinigiji
The surface of the blade over the ridgeline.
Utsuri
The whitish pattern or effect on the surface of a sword. This is not always present.
Yakiba
Hardened edge of a sword.
Yokote
Dividing point or line between the point and the body of the blade.
See also Japanese sword steel: tamahagane