Nihonto Club

Japanese

Definition

Lit. 'meat'. ji having niku means that ji area is not flat, but rounded, curved in the cross-section.

Hira-niku - measure to describe the niku of hira area (also: ji-niku)
Ha-niku - niku of the area between the hamon and the cutting edge.

Niku can be described as full (平肉多い - hiraniku oi) or flat (平肉少ない - hiraniku sukunai).