Ballista

·noun An ancient military engine, in the form of a crossbow, used for hurling large missiles.

ballista
ballista (better than balista; in Gloss. also ballistra), ae, f. [βάλλω], I a lārge military engin...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
Ballista
Ballista, ae, v. 2. Balista. ...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
ballista
ballista or bālista ae, f an engine for hurling: balistae emissiones lapidum habent: asseres ballis...

An Elementary Latin Dictionary
ballista
An ancient military engine, like an enormous cross-bow, for throwing stones, darts, and javelins aga...

The Sailor's Word-Book