While "furn" is not a common word in modern English, it was used historically to refer to a type of fur or skin.
Here are some examples of its use:
* "The hunter wore a cloak of furn."
* "The old book described a furn-covered chair."
It's important to note that "furn" is rarely used today and is considered archaic. In most cases, "fur" would be the appropriate word to use.