Definition of "duckbill" []

• See platypus. (noun)
• See hadrosaur. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Walter: re the big Darne: it does indeed have rifle sights in what they call a "duckbill" or half rib."
• "- A "duckbill" valve has been installed at the outfall to prevent rising river waters from backing into the stream during major flooding events."
• "I wondered whether the Chaits had a duckbill dinosaur, my favorite growing up, with the possible exception of the brontosaurus."