Noun | 1. | Motacillidae - pipits and wagtails bird family - a family of warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings Oscines, Passeres, suborder Oscines, suborder Passeres - two names for the suborder of typical songbirds genus Motacilla, Motacilla - type genus of the Motacillidae: wagtails Anthus, genus Anthus - pipits |