The Collaborative International Dictionary of English v.0.48:

Cryer \Cry"er\ (-?r), n. [F. faucon gruyer a falcon trained to
   fly at the crane, fr. crye crane, fr. L. crus crane. Cf.
   Cryal.]
   The female of the hawk; a falcon-gentil.
   [1913 Webster]

Bouvier's Law Dictionary, Revised 6th Ed (1856):

CRYER, practice. An officer in a court whose duty it is to make various
proclamations ordered by the court.