From The Collaborative International Dictionary of English v.0.48 :
Atrichornithidae \Atrichornithidae\ n.
a antural family comprising the scrubbirds.
Syn: family Atrichornithidae.
[WordNet 1.5]
From WordNet (r) 3.0 (2006) :
Atrichornithidae
n 1: scrubbirds [syn: Atrichornithidae, family
Atrichornithidae]