{i} measurement of water depth by means of a line and lead; measurements obtained by sounding with a lead and line; measurement of atmospheric conditions (Meteorology)
The sounding of a bell or a horn is the act of causing it to make a sound. There were 15 minutes between the first air raid alert and the sounding of the all-clear signal
Any place or part of the ocean, or other water, where a sounding line will reach the bottom; usually in the plural
ascertaining the depth of the sea by means of a lead and line, sunk from a ship to the bottom
{s} making a noise, producing a loud sound, resonant; making loud meaningless noises