Found 2 items, similar to ballista.
English → English (WordNet) Definition: ballista ballista n : medieval artillery used during sieges; a heavy war engine for hurling large stones and other missiles [syn: catapult, arbalest, arbalist, bricole, mangonel, onager, trebuchet, trebucket] [also: ballistae (pl)]
English → English (gcide) Definition: Ballista Ballista \Bal*lis"ta\, n.; pl. Ballist[ae]. [L. ballista, balista, fr. Gr. ba`llein to throw.] An ancient military engine, in the form of a crossbow, used for hurling large missiles. [1913 Webster]