in·ci·sor /ɪnˈsaɪzɚ/
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  in·ci·sor /ɪnˈsaɪzɚ/ 名詞
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  In·ci·sor n.  Anat. One of the teeth in front of the canines in either jaw; an incisive tooth. See Tooth.
  In·ci·sor, a. Adapted for cutting; of or pertaining to the incisors; incisive; as, the incisor nerve; an incisor foramen; an incisor tooth.
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  incisor
       n : a tooth for cutting or gnawing; located in the front of the
           mouth in both jaws