1799, in the meaning defined above
duck-billed dinosaur
duck-billed platypus
duckbill gar
“Duck-billed platypus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/duck-billed%20platypus. Accessed 21 Dec. 2024.
Britannica.com: Encyclopedia article about duck-billed platypus
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