Mudflat (noun)

1. A flat area of ground that is covered with mud, especially near a river or the sea.
2. A low-lying tract of land that is covered or partially covered with mud.

Origin:

Late 19th century. compound of "mud" and "flat".

Examples:

1. The mudflat was a prime spot for birdwatching, as many migratory birds stopped there.
2. The tide had gone out, revealing a wide expanse of mudflat.
3. The mudflat was treacherous to walk on, as the mud was deep and slippery.
4. The mudflat was dotted with small pools of water and clumps of grass.
5. The mudflat was a valuable resource for local communities, who used the mud to make bricks and other building materials.