Machaerodus
Pronunciation : Ma*ch?"ro*dus, Ma*chai"ro*dus
Part of Speech : n.
Etymology : [NL., fr. Gr. (Paleon.)
Definition : Defn: 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.
Source : Webster's Unabridged Dictionary, 1913