hatchment

hatch.ment

n.Heraldry （名词）【纹章学】
A panel bearing the coat of arms of a deceased person.
丧徽：其上有死人的衣服袖子的板

来源：
Alteration of hachement, achiment
hachement的变化, achiment
from achievement [escutcheon]
源自 achievement[饰有纹章的盾]