dinosaur
US /ˈdaɪ.nə.sɔːr/
UK /ˈdaɪ.nə.sɔːr/
1.
a fossil reptile of the Mesozoic era, in many species reaching an enormous size.
:
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The museum has a complete skeleton of a dinosaur.
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Scientists are still discovering new species of dinosaurs.
2.
a person or thing that is old-fashioned or has not adapted to changing circumstances.
:
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My boss is a real dinosaur when it comes to technology.
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That old computer system is a total dinosaur.