Definition of "floodplain" []

• A plain bordering a river and subject to flooding. (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.

• "Land along rivers is usually characterized by floodplain levels related to past submergence in times of high water."
• "September 2, 2005 at 10: 24 am building on a floodplain is folly, and that’s exactly what New Orleans did."
• "It's part of the little hills that you get on both sides of that floodplain, which is the Missouri Valley."