|Tools Required:||Knives, Axes|
|Ingredients:||Slender tree trunk, 0.5 lbs Leather|
The grainflail is needed to get usable leaves+seeds from plants harvested using the agriculture skill.
To use : drop plants on the ground, then use agriculture skill+ : thresh
It can also be used as a weapon.
URW Game Encyclopedia description
The official URW in-game encyclopedia (accessed by the key) describes the grainflail thusly:
The common threshing tool favoured as a peasant weapon is basically an articulated staff. They consist of two 18-36 inch wooden staves, joined together by a short leather thong. The handle stave is usually longer than the impact stave.