SOUND (6)

Sound, v. t. [imp. & p. p. Sounded; p. pr. & vb. n. Sounding.] [[F. sonder; cf. AS. sundgyrd a sounding rod, sundline a sounding line (see Sound a narrow passage of water).]] 1. 1. To measure the depth of; to fathom; especially, to ascertain the depth of by means of a line and plummet.
2. 2. Fig.: To ascertain, or try to ascertain, the thoughts, motives, and purposes of (a person); to examine; to try; to test; to probe.
I was in jest, And by that offer meant to sound your breast. Dryden. I've sounded my Numidians man by man. Addison. 3. 3. (Med.) To explore, as the bladder or urethra, with a sound; to examine with a sound; also, to examine by auscultation or percussion; as, to sound a patient.