helepolis means an ancient Greek siege engine consisting of a wheeled tower containing machines for throwing stones and spears. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Why “helepolis” is a great word
HELEPOLIS — [Noun] An immense, wheeled siege tower of antiquity, designed to storm fortified city walls. From Ancient Greek ἑλέπολις (helépolis), from ἑλεῖν (heleîn, "to take, capture") + πόλις (pólis, "city"), literally meaning "taker of cities." Unlike a "ballista," a stationary torsion catapult, or a "battering ram," a focused engine for breaching, the helepolis was a moving fortress—a vertical battlefield. It was the groan of colossal wheels on hard-packed earth, the glint of sun on bronze-plated siding, and the slow, terrifying shadow it cast upon a rampart. It represented the brutal calculus of siegecraft: to conquer a city, one must first bring a mountain to its door.
Etymology
From Ancient Greek ἑλέπολις (helépolis, “taker of cities”).
noun
- an ancient Greek siege engine consisting of a wheeled tower containing machines for throwing stones and spears