I found a fantastic site, the Double-Tongued Word Wrester Dictionary when I dropped in on The Quipping Queen. The dictionary
"records undocumented or under-documented words from the fringes of English. It focuses upon slang, jargon, and other niche categories which include new, foreign, hybrid, archaic, obsolete, and rare words. Special attention is paid to the lending and borrowing of words between the various Englishes and other languages, even where a word is not a fully naturalized citizen in its new language."For any language lover, this is a dynamic, real-time reference, built by a respected lexicographer. Well-worth the visit.