/treb"yoo shet', treb'yoo shet"/ , n.
a medieval engine of war with a sling for hurling missiles.
Also, trebucket /tree"buk'it, treb'yoo ket"/ .
[ 1300-50; ME trebuch ( er ) to overturn, fall ( tre ( s ) across, over ( trans- TRANS-) + buc trunk of body buc belly) + -et -ET ]