Definitions of duckbill
  1. noun
    small densely furred aquatic monotreme of Australia and Tasmania having a broad bill and tail and webbed feet; only species in the family Ornithorhynchidae
    synonyms: Ornithorhynchus anatinus, duck-billed platypus, duckbilled platypus, platypus
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    type of:
    egg-laying mammal, monotreme
    the most primitive mammals comprising the only extant members of the subclass Prototheria
  2. adjective
    having a beak resembling that of a duck
    synonyms: duck-billed
    having or resembling a beak
  3. noun
    primitive fish of the Mississippi valley having a long paddle-shaped snout
    synonyms: Polyodon spathula, paddlefish
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    type of:
    ganoid, ganoid fish
    primitive fishes having thick bony scales with a shiny covering
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