1 (noun) A shallow area in a waterway caused by the deposition of sediment 2 (verb) To become shallow due to the deposition of sediment
a bank or reef, an area of shallow water dangerous to navigation Sounding: the of operation of determioning the depth of the sea, and the quality of the ground, by means of a lead and line, sunk from the ship to the bottom, where some of the sediment or sand adheres to the tallow in the hollow base of the lead
an elevation in the water which makes it shallow and dangerous for navigation (haut-fond)
a submerged expanse of coral reef, surrounded by deep water, which does not form a part of a barrier or fringing reef