(vōl) noun
Any of a genus (Microtus) of short–tailed, mouselike or ratlike rodents; especially, the common European field mouse or the North American meadow mouse. [Short for earlier vole mouse <vole a field (<Norw. voll) + MOUSE]

(vōl) noun
In some card games, as écarté, a winning of all the tricks in a deal; hence, the entire range; a slam.
—to go the vole To risk all for great gains. [<F, appar. <voler fly <L volare]