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English definition of “dinosaur”

dinosaur

noun [C]     /ˈdaɪ.nə.sɔːr/ US  /-sɔːr/
A2 a type of reptile which stopped existing about 65,000,000 years ago. There were many different types of dinosaur, some of which were extremely large .Prehistory disapproving an old-fashioned person or thing that people no longer consider to be useful : This typewriter's a bit of a dinosaur, isn't it?People who are boring and old-fashioned
(Definition of dinosaur noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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