dinosaur

中文： 恐龙、老古董

1. Those animals of the clade Dinosauria that existed during the Triassic, Jurassic and Cretaceous periods and are now extinct. · Despite what some cartoons portray, no humans were around when dinosaurs roamed the Earth.
2. Any of the animals belonging to the clade Dinosauria, including its sole surviving lineage: Neornithes.
3. Any extinct reptile, not necessarily belonging to Dinosauria, that existed between about 230 million and 65 million years ago, as well as the stem-mammal Dimetrodon. (informal) · Pterosaurs, plesiosaurs, icthyosaurs — I don't know, they're all dinosaurs to me!
4. Someone or something that is very old or old-fashioned, especially someone who is not willing to change and adapt. (colloquial, figuratively) · She may be a tough old bird, but it's a mistake to write her off as a dinosaur; you do so at your own risk.
5. Anything no longer in common use or practice. (colloquial, figuratively)

复数 dinosaurs