Yes, he has retractible teeth, at least 32 of them, perhaps more.
Night Fury
Toothless
His dragon is called Toothless and there are several others mentioned in the books/film, but Toothless is Hiccup's only dragon in both.
They have teeth.
The word toothless is an adjective. It describes someone who has no teeth.
Toothless?
it means you have no teeth
1 with no teeth
Armadillo, anteaters, and sloths are all mammals that don't have teeth. Platypus are born with teeth, but they fall out and adult platypus are toothless. People also, most likely, are toothless by age 60 unless of course they have dentures.
Toothless. Somebody with no teeth or missing teeth.
No bro... toothless!
nightfury and the queen or king dragon
toothles is a night fury dragon