['ɑ:blɑ:st]
n.
(中世纪的)劲弩

Arblast \Ar"blast\, n.
A crossbow. See {Arbalest}.

Arbalest \Ar"ba*lest\, Arbalist \Ar"ba*list\, n. [OF. arbaleste,
LL. arbalista, for L. arcuballista; arcus bow + ballista a
military engine. See {Ballista}.] (Antiq.)
A crossbow, consisting of a steel bow set in a shaft of wood,
furnished with a string and a trigger, and a mechanical
device for bending the bow. It served to throw arrows, darts,
bullets, etc. [Written also {arbalet} and {arblast}.]
--Fosbroke.