In heraldry, a fur of a tincture resembling ermine, except that the ground is or.(noun)
The Century Dictionary (Public Domain)
Use "erminois" in a sentence
"On the dexter side, a griffin, per Fess, ermine and erminois: on the sinister, a wyvern, ermine: each gorged with a collar, fleury, counter fleury, and chained."
"On the sinister, a wolf erminois, each supporter gorged with a garland or chaplet of oak, Vert, fructed, Or. Motto."