Waschbar

Waschbar (pronunciation: VAASH-bar; Germ. Waschbär "raccoon") is a creature mentioned by Freddy Calvert. Based on its German meaning, it is likely a raccoon. The phrase "in a Waschbar's age" is used to mean "in a long time", as in the human phrase "in a coon's age".

According to the Grimm Season 1 DVD set Waschbars are in fact an actual Wesen species. It states that Waschbars are lactose intolerant, and that a sweet milk like substance known as Bierwurze Milchzucker can be given to a Waschbar as a homeopathic treatment to counter act their lactose intolerance.

Trivia
The umlaut ä in Waschbär is pronounced like the 'a' in April.

If spelt with an 'a' instead of the umlaut 'ä' (a common error in English as it lacks the letter and thus doesn't recognize it as seperate), one arrives at the German adjective waschbar, meaning "washable".

The reason the umlaut is left out is probably to keep the consistency with the umlaut lost from Jägerbär to Jägerbar in the second episode of season 1.