duck-billed dinosaur

noun
variants: or less commonly duckbill dinosaur

Definition of duck-billed dinosaur

: any of various herbivorous dinosaurs (family Hadrosauridae) of the Late Cretaceous having the jaw elongated into a snout that resembles a beak : hadrosaur Fossils of a duck-billed dinosaur have turned up in Antarctica, recalling a time 66 million years ago when the now-frozen continent bore forests and a bountiful ecosystem.— Richard Monastersky

First Known Use of duck-billed dinosaur

1913, in the meaning defined above

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The first known use of duck-billed dinosaur was in 1913

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