D defs.my
Entry 3 senses Webster, 1913

Trebuchet

/trěb’yo͞o-shet/ · Treb·u·chet · IPA /ˈtɹɛb.juˌʃɛt/
01 n. A cucking stool; a tumbrel.
  1. 1.
    A cucking stool; a tumbrel.
  2. 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.
  3. 3.
    A kind of balance for weighing.[Obs.]