bénitier

from The Century Dictionary.

• noun A font or vase for holy water, placed in a niche in the chief porch or entrance of a Roman Catholic church, or, commonly, against one of the interior pillars close to the door, into which the members of the congregation on entering dip the fingers of the right hand, blessing themselves by making the sign of the cross. Also called aspersorium, stoup, and holy-water font (which see, under font).

from the GNU version of the Collaborative International Dictionary of English.

• noun (R. C. Ch.) A holy-water stoup.