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The Collaborative International Dictionary
perclose

Parclose \Par"close\, n. [OF. See Perclose.] (Eccl. Arch.) A screen separating a chapel from the body of the church. [Written also paraclose and perclose.]
--Hook.

Wiktionary
perclose

n. 1 A parclose; a partition separating part of a church. 2 (context obsolete English) conclusion; end