The Collaborative International Dictionary
Machaerodus \Ma*ch[ae]"ro*dus\ (m[.a]*k[=e]"r[-o]*d[u^]s), Machairodus \Ma*chai"ro*dus\ (m[.a]*k[imac]"r[-o]*d[u^]s), n. [NL., fr. Gr. ma`chaira dagger + 'odoy`s tooth.] (Paleon.) A genus of extinct mammals allied to the cats, and having in the upper jaw canine teeth of remarkable size and strength; -- hence called saber-toothed tigers.
Wikipedia
Machairodus is a genus of large machairodontine saber-toothed cats that lived in Europe, Asia, Africa and North America from the late Miocene to the Middle Pleistocene.
Usage examples of "machairodus".
Was it machairodus, one of the leonine sabertooth cats that were the commonest large predators of the Pliocene?
So the machairodus lapped and glared at them and wrinkled the bridge of its nose in a contemptuous one-sided snort, and at last withdrew into the undergrowth.