Definition of "witherwin"

Jamie Radtke, the first to make opening statements, emerged from her podium immediately as an aggressor against George Allen–her intraparty arch-nemesis–repeating amidst his own supporters her oft-made attacks against Allen’s public record. She was not as demure as she was in Roanoke; she seemed at the beginning rather like she felt more comfortable in the oceanic atmosphere harpooning her opponent. Indeed, at times, it seemed she was Ahab and the witherwin Allen was her Moby Dick; but while she sails her Pequod just as intently toward a singular goal, her alastor is much less clear and she bears no visible scars of a cetacean attacker.

2012, Hampton Roads Republican US Senate Debate Summary‎

"Why did they arrest Commander Hauk?” “I'm not at liberty to discuss that with witherwins.” “Witherwins?” “Non-Tavali.”

2015, Sherrilyn Kenyon, Born of Betrayal

Of the two, the hyrn is mostly likely to befuddle our widderwins since, as it turns out, winkel is also the German word for a corner which might be known by some.

2015, LT Wolf, The World King - Book I: The Reckoning