n. - The psalm usually appointed for penitential acts, being
the 50th psalm in the Latin version. It commences with the word
miserere.
n. - A musical composition adapted to the 50th psalm.
n. - A small projecting boss or bracket, on the under side of
the hinged seat of a church stall (see Stall). It was intended, the
seat being turned up, to give some support to a worshiper when
standing. Called also misericordia.