brontosaur
/ˈbrɑntəˌsɔr/
noun
- A very large, long-necked dinosaur that lived during the Jurassic period; another name for brontosaurus.
- The brontosaur is one of the most famous dinosaurs because of its huge size.
- Scientists once thought the brontosaur was a different species from the apatosaurus.
- Kids often draw brontosaurs with their long necks reaching up to treetops.