What is "cannonballs"

Usage examples of "cannonballs".

He will heat his cannonballs red-hot, then fire them over the walls, hoping to hit this arsenal.

The gunners had charged the gaudy barrel with a double load of powder and now they rammed two cannonballs down the blackened gullet.

Mackay had marked eight cannonballs as being lost in a river crossing and two barrels of powder had been marked down as stolen, but in the weeks since Assaye no fewer than sixty-eight oxen had lost their burdens to either accidents or thieves.

The clumsy solid cannonballs had done no more than scratch its armored hull, but the captain had evidently had the fright of his life.