What is "purgery"

Purgery \Pur"ger*y\, n. The part of a sugarhouse where the molasses is drained off from the sugar.

"bleaching room for sugar," 1847, from French purgerie (1838), from purger (see purge (v.)). For the legal term, see perjury.

n. 1 A part of a sugarhouse where molasses is drained from sugar. 2 (misspelling of perjury English)