What is "pew opener"

Pew \Pew\, n. [OE. pewe, OF. puie parapet, balustrade, balcony, fr. L. podium an elevated place, a jutty, balcony, a parapet or balcony in the circus, where the emperor and other distinguished persons sat, Gr. ?, dim. of ?, ?, foot; -- hence the Latin sense of a raised place (orig. as a rest or support for the foot). See Foot, and cf. Podium, Poy.]

1. One of the compartments in a church which are separated by low partitions, and have long seats upon which several persons may sit; -- sometimes called slip. Pews were originally made square, but are now usually long and narrow.

2. Any structure shaped like a church pew, as a stall, formerly used by money lenders, etc.; a box in theater; a pen; a sheepfold. [Obs.]
   --Pepys. Milton.

   Pew opener, an usher in a church. [Eng.]
   --Dickens.