Glossarysinks
When something sinks, it falls, drops or goes down into the water or the ground.
Lets use it in a sentence, for example:
"The boat was sinking in the ocean".
http://www.imageenvision.com/150/34139-clip-art-graphic-of-a-cruise-ship-resembling-titanic-sinking-in-the-ocean-by-maria-bell.jpg