Part of speech: Verb
Definition: “To make a hole through, especially: to make a line of holes in to facilitate separation.”
The tool: “what is it makes them think that the plowshare torn from the bowels of the earth by perforating machines,…”
I understand now that a plowshare is a part of the plow, and the plow itself is putting the holes in the ground. when the “plow” in “perforating” its putting holes in the ground that helps for farming and planting seeds.