The crossword solution for the term SOUND, PERHAPS is INLET. INLET is a noun that refers to an opening or passage into a larger body of water, such as a bay or harbor. It can also refer to a small stream or creek that flows into a larger river or lake. INLET is often used to describe a narrow body of water that connects two larger bodies of water. INLET is also used to describe a narrow passage or opening in a wall or other structure.