ermine, name for a number of northern species of weasel having white coats in winter, and highly prized for their white fur. It most commonly refers to the white phase of Mustela erminea, called short-tailed weasel in North America and stoat in the Old World. The white pelts are made into wraps, coats, and trimmings. The black-tipped tails are used in the United States as ornament, and in Europe they were used with the ermine of royal robes.

Ermine Street, Saxon name for the Roman road in Britain that ran from London to Lincoln and York. It was one of the four main highways of Saxon England. The name is derived from the Earningas, a group of people who inhabited an area in Cambridgeshire through which the road passed. The road from Silchester to Gloucester was also called Ermine Street.

or stoat

Species of the weasel family (Mustela erminea). Its white winter coat has historically adorned royal robes and is still used in the fur trade. Ermines are found in North America and northern Eurasia. They are most abundant in thickets, woodland, and semitimbered areas. In summer they are brown, with whitish throat, chest, and belly. Species are 5–12 in. (13–29 cm) long (excluding the 2–5-in., or 5–12-cm, tail) and weigh less than 11 oz (0.3 kg). Voracious carnivores, ermines feed on small mammals, birds, eggs, frogs, and, occasionally, invertebrates.

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