incisor
/ɪnˈsaɪzə(r)/noun
(亦作incisor tooth)
- a narrow-edged tooth at the front of the mouth, adapted for cutting. In humans there are four incisors in each jaw.门齿, 切牙。
词源
late 17th cent.: from medieval Latin， literally 'cutter'， from Latin incis- （see INCISE）.