a rich tradition and terminology, enough that there are separate terminologies for the top (hi, usually pronounced as bi when used as the second member of a compound) and bottom (tome) ends of the feature. Bo-hi (): A continuous straight groove of notable width, known as katana-bi on tantō. With soe-bi (), a secondary narrow groove follows the inner straight length of the main one. With tsure-bi (), the secondary is similar but continues beyond the straight length. Futasuji-hi (): Two parallel grooves. Shobu-hi (): A groove shaped like the leaf of an iris plant. Naginata-hi (): A miniature bo-hi whose top is oriented opposite from the blade's, and usually accompanied by a soe-bi. Seen primarily on naginatas. Kuichigai-hi (): Two thin grooves that run the top half of the blade; the bottom half is denoted by the outer groove stopping halfway while the inner one expands to fill the width. Koshi-bi (): A short rounded-top groove found near the bottom of a blade, near to the tang. Tome Kaki-toshi (): The groove runs all the way down to the end of the tang. Kaki-nagashi (): The groove tapers to a pointed end halfway down the tang. Kaku-dome (): The groove stops as a square end within 3 cm of the tang's upper end. Maru-dome (): Similar to the kaku, except with a rounded-end. The kukri The Nepali kukri has a terminology of its own, including the "aunlo bal" (finger of strength/force/energy), a relatively deep and narrow fuller near the spine of the blade, which runs (at most) between the handle and the corner of the blade, and the "chirra", which may refer either to shallow fullers in the belly of the blade or a hollow grind of the edge, and of which two or three may be used on each side of the blade. Gallery See also Fuller (metalworking) Swaging References Further reading Blade weapons Metalworking tools