fistūca, ae, f.,
an instrument for ramming down , a rammer , beetle , Caes. B. G. 4, 17, 4; Cato R. R. 28, 2; Plin. 36, 25, 61, § 185.
fistūca ae, f a rammer, ram, beetle, Cs. ...
An Elementary Latin Dictionary
·noun An instrument used by the ancients in driving piles. ...
Webster's Dictionary of the English Language