
1) Liturgy of the Hours
Found on
https://www.crosswordclues.com/clue/misericord

A misericord (sometimes named mercy seat, like the Biblical object) is a small wooden shelf on the underside of a folding seat in a church, installed to provide a degree of comfort for a person who has to stand during long periods of prayer. The small shelves were available for use at times when the folding chair was required to be stored folded u...
Found on
http://en.wikipedia.org/wiki/Misericord

ledge in church to lean against while standing; forgiveness or mercy
Found on
http://phrontistery.info/m.html

from the Latin word for 'mercy' comes this term which refers to pivoting wooden brackets in choir stalls which lifted up to provide relief for clergy who had to stand during long church services. Misericords are often ornately carved and decorative.
Found on
http://www.britainexpress.com/History/medieval/church-glossary.htm

In church architecture, a projection on the underside of a hinged seat of the choir stalls, used as a rest for a priest when standing during long services. Misericords are...
Found on
http://www.encyclo.co.uk/local/20688

Shelf on a carved bracket placed on the underside of a hinged choir stall seat. Supports an occupant when standing. Often bears interesting carvings.
Found on
http://www.encyclo.co.uk/local/20941

Shelf on a carved bracket placed on the underside of a hinged choir stall seat. Supports an occupant when standing. Often bears interesting carvings.
Found on
http://www.encyclo.co.uk/local/22200

Decorated shelf placed on the under side of hinged seat in choir stall, to provide support against which to lean while standing.
Found on
https://www.encyclo.co.uk/local/20434
No exact match found.