edentate
/iːˈdenteɪt/noun
1- Zoology a mammal of an order distinguished by the lack of incisor and canine teeth. The edentates, which include anteaters, sloths, and armadillos, are all native to Central and South America.【动】贫齿动物, 贫齿目（哺乳）动物。
1.1
- Order Xenarthra (or Edentata).异关节目（或贫齿目）。
词源
early 19th cent.: from Latin edentatus, past participle of edentare 'make toothless', from e- （variant of ex-） 'out' + dens, dent- 'tooth'.