Low-lying muddy land that is covered at high tide and exposed at low tide.(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.
Use "mud flat" in a sentence
"Erected on a low, reedy mud flat called Mud Island a few miles below Philadelphia, the fort was surrounded by dikes and fortified with batteries that, wrote a defender, “were nothing more than old spars and timber laid up in parallel lines and filled between with mud and dirt.”"
"He went ashore with the British naval brigade to capture the Taku forts and, under heavy fire, led a company of British, German, and Japanese sailors across a sunbaked mud flat to storm the west gate of a fort."