8. Founded in law; legal; valid; not defective; as, a sound title to
land.
Sound is sometimes used in the formation of self- explaining compounds;
as, sound-headed, sound-hearted, sound-timbered, etc.
Sound currency (Com.), a currency whose actual value is the same as its
nominal value; a currency which does not deteriorate or depreciate or
fluctuate in comparision with the standard of values.
Sound, adv. Soundly.
So sound he slept that naught might him awake.
Spenser.
Sound, n. [AS. sund a narrow sea or strait; akin to Icel., Sw., Dan. &
G. sund, probably so named because it could be swum across. See Swim.]
(Geog.) A narrow passage of water, or a strait between the mainland and
an island; also, a strait connecting two seas, or connecting a sea or
lake with the ocean; as, the Sound between the Baltic and the german
Ocean; Long Island Sound.
The Sound of Denmark, where ships pay toll.
Camden.
Sound dues, tolls formerly imposed by Denmark on vessels passing
through the Baltic 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.
2. Fig.: To ascertain, or try to ascertain, the thoughts, motives, and
purposes of (a person); to examine; to try; to test; to probe.