__ Street, Roman Road Running From London to York
Puzzle 20 of Celtic Mythology Hard Pack
Question is: __ Street, Roman Road Running From London to York
and the answer is: ERMINE
Word Meaning:
ERMINE — A weasel found in northern latitudes (Mustela erminea in Eurasia, Alaska, and the Arctic, Mustela haidarum in Haida Gwaii, Mustela richardsonii in the rest of North America); its dark brown fur turns white in winter, apart from the black tip of the tail.
Definitions from Wiktionary.