noun
iaido practice sword
A sword specifically designed for iaido practice, often unsharpened or made of alloy, distinct from a live blade.
See also: 居合い
初心者はまず居合刀で基本の型を練習します。
Beginners first practice basic forms with an iaido practice sword.
Compound of 居合 (iai, 'iaido') and 刀 (katana, 'sword'), literally 'iaido sword'.