wether (n.) Look up wether at Dictionary.com
Old English weðer "ram," from Proto-Germanic *wethruz (cf. Old Saxon wethar, Old Norse veðr, Old High German widar, German Widder, Gothic wiþrus "lamb"), literally "yearling," from PIE root *wet- "year" (cf. Sanskrit vatsah "calf," Greek etalon "yearling," Latin vitulus "calf," literally "yearling"). Male sheep, especially a castrated one.