misericord

https://wordsmith.org/words/misericord.html

noun: 1. Compassion, pity, or mercy. 2. Something to provide support to a standing person. Typically a small projection from the underside of a hinged seat that can be used for support when the seat is turned up. 3. A place where rules are relaxed. Typically a room, apartment, etc., in a monastery where monastic rules are not enforced. 4. A dagger used to deliver the death stroke to a seriously wounded person.