But there is a lute as a weapon so crushing a lute on orc’s head is eventually possible =P
It came with the Minstrel. Upon hiring, seeing it the first time, I thought it was just a visual addition to the Minstrel background, because it is somehow painted different from the other weapons; I guess it is the missing bold, black contour.
I never used it though; I deemed it to valuable to waste it in a fight(since, as far as I know, it cannot be bought and is kind of rare to find on Minstrels) and secretly hoped for another usage(unfortunately it is not tied to the Minstrel singing event, boosting its result; instead the Minstrel suddenly has a Lute). So it filled an inventory slot for pretty long until I sold it, because I needed space and it seems to be more a gimmick than anything else; too bad.
PS: Maybe someone active on the Battle Brothers Wiki could make a melee weapon entry for it, since up to now it has none. http://battlebrothers.wikia.com/wiki/Melee_Weapons