Mis`e*ri*cor"di*a (?), n. [L., mercy, compassion; miser wretched + cor, cordis, heart.]
2. Anc. Armor.
A thin-bladed dagger; so called, in the Middle Ages, because used to give the death wound or "mercy" stroke to a fallen adversary.
An indulgence as to food or dress granted to a member of a religious order.
© Webster 1913.