PEAN—field sable; powdering or.
ERMYNITES—Argent, powdered sable, with the addition of a single red hair on each side the sable tufts. This fur is seldom seen in English heraldry; and it is impossible to give an example without using colour.
VAIR—argent and azure. It is represented by small bells, part reversed, ranged in lines in such a manner, that the base argent is opposite to the base azure.
COUNTER-VAIR, is when the bells are placed base against base, and point against point.
POTENT—an obsolete word for a crutch: it is so called in Chaucer's description of Old Age.