'Trebucket' definitions:

Definition of 'trebucket'

noun

An engine that provided medieval artillery used during sieges; a heavy war engine for hurling large stones and other missiles [syn: catapult, arbalest, arbalist, ballista, bricole, mangonel, onager, trebuchet, trebucket]

From: GCIDE

Trebuchet \Treb"u*chet\, Trebucket \Tre"buck*et\, n. [OF. trebuchet, trebukiet, an engine of war for hurling stones, F. tr['e]buchet a gin, trap, a kind of balance, fr. OF. trebuchier, trebuquier, to stumble, trip, F. tr['e]bucher.]
1. A cucking stool; a tumbrel. --Cowell. [1913 Webster]
2. A military engine used in the Middle Ages for throwing stones, etc. It acted by means of a great weight fastened to the short arm of a lever, which, being let fall, raised the end of the long arm with great velocity, hurling stones with much force. [1913 Webster] [1913 Webster]
3. A kind of balance for weighing. [Obs.] [1913 Webster]

From: GCIDE

Castigatory \Cas"ti*ga*to*ry\, n. An instrument formerly used to punish and correct arrant scolds; -- called also a ducking stool, or trebucket. --Blacktone. [1913 Webster]