voleyoudaoicibaDictYouDict
vole: [19] A vole is etymologically a ‘fieldmouse’. The word is short for an earlier volemouse, which is assumed to have been borrowed from an unrecorded Norwegian compound *vollmus. The first element of this, voll ‘field’, was descended from Old Norse völlr ‘field’, which in turn went back to prehistoric Germanic *walthus (source also of English weald [OE] and wold [OE] and German wald ‘forest’). It may be related ultimately to wild. The second element, mus, is the same word as English mouse.
=> weald, wold
vole (n.)youdaoicibaDictYouDict
1828, short for vole-mouse (1805, in an Orkneys book), literally "field-mouse," with first element probably from Old Norse völlr "field," from Proto-Germanic *walthuz (cognates: Icelandic völlr, Swedish vall "field," Old English weald; see wold).