Definify.com
Webster 1913 Edition
Stoup
1.
A flagon; a vessel or measure for liquids.
[Scot.]
Jamieson.
2.
(Eccl.)
A basin at the entrance of Roman Catholic churches for containing the holy water with which those who enter, dipping their fingers in it, cross themselves; – called also
holy-water stoup
or holy-water font
.