noun
billhook
A cutting tool with a curved blade, used in agriculture and forestry for pruning, hedging, and cutting small wood.
農家の人は鉈鎌で枝を切り落とした。
The farmer cut off the branches with a billhook.
鉈 is a broader term for a hatchet or heavy knife, while 鉈鎌 specifically refers to a billhook with a hooked blade.
鎌 is a sickle, typically used for cutting grass or crops, whereas 鉈鎌 is a heavier, hooked blade for woody material.
Compound of 鉈 (nata, 'hatchet') and 鎌 (kama, 'sickle'), describing a tool that combines features of both.