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duckbill

An informal nickname for two very different creatures: the duck-billed platypus — Australia's famously bizarre mammal that lays eggs, has a beaver tail, and uses electroreception to hunt — and hadrosaurs, the duck-billed dinosaurs of the Cretaceous period.

ˈdʌkbəl129 viewsLast reviewed Jun 29, 2026+ Add a definition
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#1·Apr 28, 2026US

An informal nickname for two very different creatures: the duck-billed platypus — Australia's famously bizarre mammal that lays eggs, has a beaver tail, and uses electroreception to hunt — and hadrosaurs, the duck-billed dinosaurs of the Cretaceous period. The word perfectly captures the flat, wide snout that both share. In casual conversation, 'duckbill' almost always means the platypus. It's also used loosely to describe anything sporting that distinctive flat, wide-mouthed shape.

The nature documentary spent a whole episode on the duckbill, and honestly the platypus just gets weirder every time you learn more about it.
Origin: Descriptive compound from 'duck' + 'bill,' referencing the characteristic flat, broad bill shape of the platypus and hadrosaurs. Editorial expansion authored on Slangora (model-assisted, hedged).
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#3·Apr 27, 2026US

(informal) A hadrosaur.

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#4·Apr 27, 2026US

(informal) The duck-billed platypus.

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#2·Apr 27, 2026US

A fish of the family.

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