Defn: To become threefold. Swift.
TREBLENESS
Tre"ble*ness, n.
Defn: The quality or state of being treble; as, the trebleness of tones. Bacon.
TREBLET
Treb"let, n.
Defn: Same as Triblet.
TREBLY
Tre"bly, adv.
Defn: In a treble manner; with a threefold number or quantity; triply. Swift.
TREBUCHET; TREBUCKET Treb"u*chet, Tre"buck*et, n. Etym: [OF. trebuchet, trebukiet, an engine of war for hurling stones, F. trébuchet a gin, trap, a kind of balance, fr. OF. trebuchier, trebuquier, to stumble, trip, F. trébucher.]
1. A cucking stool; a tumbrel. Cowell.
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.