- incisor (n.)
[incisor 词源字典]
- "cutting tooth," 1670s, from Medieval Latin incisor "a cutting tooth," literally "that which cuts into," from Latin incisus, past participle of incidere (see incision). Inscisours as the name of a cutting tool is attested from early 15c.[incisor etymology, incisor origin, 英语词源]