The Collaborative International Dictionary of English v.0.48:

Crier \Cri"er\ (kr?"?r), n. [Cf. F. crieur. See Cry.]
   One who cries; one who makes proclamation. Specifically, an
   officer who proclaims the orders or directions of a court, or
   who gives public notice by loud proclamation; as, a
   town-crier.
   [1913 Webster]

         He openeth his mouth like a crier.       --Ecclus. xx.
                                                  15.
   [1913 Webster]

WordNet (r) 3.0 (2006):

crier
    n 1: a person who weeps [syn: weeper, crier]
    2: (formerly) an official who made public announcements [syn:
       town crier, crier]
    3: a peddler who shouts to advertise the goods he sells

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

CRIER. An inferior officer of a court, whose duty it is to open and adjourn
the court, when ordered by the judges; to make proclamations and obey the
directions of the court in anything which concerns the administration of
justice.