(1):
(n.) A sort of panel, upon which the arms of a deceased person are temporarily displayed, - usually on the walls of his dwelling. It is lozenge-shaped or square, but is hung cornerwise. It is used in England as a means of giving public notification of the death of the deceased, his or her rank, whether married, widower, widow, etc. Called also achievement.
(2):
(n.) A sword or other mark of the profession of arms; in general, a mark of dignity.