noun
scimitar; crescent-moon blade
Refers to a historical Chinese polearm with a curved blade, often associated with Guan Yu in Romance of the Three Kingdoms. Not a common modern word; used in historical or martial arts contexts.
関羽は偃月刀を愛用したと伝えられている。
It is said that Guan Yu favored the crescent-moon blade.
From Chinese 偃月刀 (yǎnyuèdāo), literally 'crescent-moon blade'. The Japanese reading is on'yomi.