From The Collaborative International Dictionary of English v.0.48:
Sound \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. To measure the depth of; to fathom; especially, to
ascertain the depth of by means of a line and plummet.
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2. Fig.: To ascertain, or try to ascertain, the thoughts,
motives, and purposes of (a person); to examine; to try;
to test; to probe.
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I was in jest,
And by that offer meant to sound your breast.
--Dryden.
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I've sounded my Numidians man by man. --Addison.
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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.
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