bombard

They planted in divers places twelve great bombards, wherewith they threw huge stones into the air, which, falling down into the city, might break down the houses.

[…] yond same black cloud, yond huge one, / looks like a foul bombard that would shed his liquor.

With mines and parallels contracts the space;

Then bids the battering floats his labors crown

And pour their bombard on the shuddering town