Mentioned in A Tourist Guide to Lancre, Orac Oracsson outfitters of Ohulan Cutash make coats of the finest waterproofing quality. Eric Wheelbrace swears by them. Well, swore - he's presumed to be off with the fairies... and may the gods help him!
Having a coat from Oracsson would mean having "An Oracsson"; phonetically, "Anorak".
Anorak has two meanings in contemporary English: the warm heavy jacket with a hood that Eric would appreciate; and a term of abuse for boring people, such as trainspotters, who wear them - at least in the mindset of the abusive.