From The Collaborative International Dictionary of English v.0.48 [gcide]:
Stagecoach \Stage"coach`\ (st[=a]j"k[=o]ch`), n.
A coach that runs regularly from one stage, station, or place
to another, for the conveyance of passengers.
[1913 Webster]
From WordNet (r) 3.0 (2006) [wn]:
stagecoach
n 1: a large coach-and-four formerly used to carry passengers
and mail on regular routes between towns; "we went out of
town together by stage about ten or twelve miles" [syn:
stagecoach, stage]