What is the meaning of Sondar?

to sound, to take soundings of

to insert a probe into

to sound out (determine a person's intent or preference)

to take soundings in

to sound: ascertain the depth of, explore the nature of the bottom

to fathom

to try, test

to probe (with a probe), to sound (with a sound)

to make a boring

indefinite plural of sonde

to investigate inconspicuously

to probe (to insert a probe into)

to fathom (to measure the depth of a body of water)

to sound (to probe the depth of water with a weighted rope or similar)

to catheterize

Source: wiktionary.org