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WordNet-Online
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Adjective duckbill has 1 sense
- duckbill, duck-billed - having a beak resembling that of a duck; "a duck-billed dinosaur"
Antonym: beakless (indirect, via beaked)
Noun duckbill has 2 senses
- paddlefish, duckbill, Polyodon spathula - primitive fish of the Mississippi valley having a long paddle-shaped snout
--1 is a kind of ganoid, ganoid fish
--1 is a member of Polyodon, genus Polyodon
- platypus, duckbill, duckbilled platypus, duck-billed platypus, Ornithorhynchus anatinus - small densely furred aquatic monotreme of Australia and Tasmania having a broad bill and tail and webbed feet; only species in the family Ornithorhynchidae
--2 is a kind of monotreme, egg-laying mammal
--2 is a member of Ornithorhynchus, genus Ornithorhynchus
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