Having massive curved upper canine teeth (adjective)
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Use "sabre-toothed" in a sentence
"But, of course, this Brazil side aren't the ferocious sabre-toothed superpredators of old."
"The early Britons would have lived alongside sabre-toothed cats and hyenas, primitive horses, red deer and southern mammoths in a climate similar to that of southern Britain today, though winters were typically a few degrees colder."
"But, let's be realistic, it isn't very often that our lives are directly threatened these days, for example, we are rarely confronted by sabre-toothed tigers or warring tribes on a daily basis (okay, never)."