pederero
A short piece of chambered ordnance, used to fire stones in naval and siege warfare.
historical
His habitation is defended by a ditch, over which he has laid a draw-bridge, and planted his court-yard with patereroes continually loaded with shot […].
Where it comes from
From Spanish pedrero, from Medieval Latin petrarium. Compare petrary.
Adapted from the Wiktionary entry pederero (CC BY-SA 4.0).