arbalister

from The Collaborative International Dictionary of English v.0.48

Arbalester \Ar"ba*lest`er\, Arbalister \Ar"ba*list`er\, n. [OF.
   arblastere, OF. arbalestier. See {Arbalest}.]
   A crossbowman. [Obs.] --Speed.
   [1913 Webster]