The Collaborative International Dictionary of English v.0.48:

Atrichornithidae \Atrichornithidae\ n.
   a antural family comprising the scrubbirds.

   Syn: family Atrichornithidae.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Atrichornithidae
    n 1: scrubbirds [syn: Atrichornithidae, family
         Atrichornithidae]