wallcreeperEnglishOxford New American Dictionarywallcreeper /ˈwôlˌkrēpər, ˈwɔlˌkripər / ▸ noun a Eurasian songbird related to the nuthatches, having mainly gray plumage with broad bright red wings, and living among rocks in mountainous country. Tichodroma muraria, family Sittidae (or Tichodromadidae).