Toothless (8)
I believe the answer is:
edentate
'toothless' is the definition.
(edentate means lacking teeth)
This is all the clue.
(Other definitions for edentate that I've seen before include "Animal as sloth, armadillo" , "Mammal with few or no teeth" , "anteater for one" , "sloth, say" , "lacking bite" .)