What is the meaning of Sounding?

The action of the verb to sound.

Emitting a sound.

Sonorous.

present participle and gerund of sound

A test made with a probe or sonde.

A measured depth of water.

Any place or part of the ocean, or other water, where a sounding line will reach the bottom.

The sand, shells, etc. brought up by the sounding lead when it has touched bottom.

The act of inserting of a thin metal rod into the urethra of the penis for medical or sexual purposes..

Source: wiktionary.org