Definition of reptile noun from the Oxford Advanced American Dictionary

 

reptile

 noun
noun
NAmE//ˈrɛptaɪl//
 
, NAmE//ˈrɛptəl//
 
 
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any animal that has cold blood and skin covered in scales, and that lays eggs. Snakes, crocodiles, and turtles are all reptiles. compare amphibian
NAmE//rɛpˈtɪliən//
 
, NAmE//rɛpˈtɪlyən//
 
adjective our reptilian ancestors (figurative) He licked his lips in an unpleasantly reptilian way.
See the Oxford Advanced Learner's Dictionary entry: reptile