miserere

Etymology
From, a borrowing from , first word of the 51st Psalm (50th in the older Greek and Latin numbering), translating and , inflected form of.

Noun

 * 1) An expression of lamentation or complaint.
 * 2) A medieval dagger, used for the mercy stroke to a wounded foe; misericord.
 * 3)  A small projecting boss or bracket on the underside of the hinged seat of a church stall, intended to give some support to a standing worshipper when the seat is turned up; a misericord.
 * 4) Ileus.

Etymology
, second-person singular active imperative form of.

Noun

 * 1)  Miserere 51st psalm
 * 2)  expression of lamentation or complaint

Verb

 * : Have mercy!