From The Collaborative International Dictionary of English v.0.48 :
Felidae \Felidae\ n.
a natural family of lithe-bodied round-headed fissiped
mammals, including the cats; wildcats; lions; leopards;
cheetahs; and saber-toothed tigers.
Syn: family Felidae.
[WordNet 1.5]
From WordNet (r) 3.0 (2006) :
Felidae
n 1: cats; wildcats; lions; leopards; cheetahs; saber-toothed
tigers [syn: Felidae, family Felidae]