smilodon

 
Pronunciation: /ˈsmɪlədɒn/

noun

  • a large sabre-toothed cat of the Pleistocene epoch (see sabretooth).
    • Smilodon fatalis of North America and Smilodon populator of South America

Origin:

modern Latin, from Greek smilē 'smile' + odous, odont- 'tooth'