wallcreeper Syllabification: (wall·creep·er)Pronunciation: /ˈwôlˌkrēpər/Definition of wallcreeper 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) wallcreeper in other Oxford dictionaries Definition of wallcreeper in the British & World English dictionary