misericord

Merriam-Webster Dictionary:
Variant(s): also mi·ser·i·corde \mə-ˈzer-ə-ˌkȯrd, -ˈser-\
Function: noun
Etymology: Medieval Latin misericordia seat in church, from Latin, mercy, from misericord-, misericors merciful, from misereri + cord-, cor heart — more at heart
Date: circa 1515
: a small projection on the bottom of a hinged church seat that gives support to a standing worshiper when the seat is turned up