/ ɪnˈsaɪzə(r); NAmE / noun
one of the eight sharp teeth at the front of the mouth that are used for biting
—compare canine , molar
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WORD ORIGIN
late 17th cent.: from medieval Latin , literally cutter , from Latin incis- cut into, engraved, from the verb incidere , from in- into + caedere to cut.