[1] : The Collaborative International Dictionary of English v.0.48

sound \sound\, a. compar. sounder; superl. soundest. oe.
   sound, as. sund; akin to d. gezond, g. gesund, ohg. gisunt,
   dan.  sw. sund, and perhaps to l. sanus. cf. sane.
   1. whole; unbroken; unharmed; free from flaw, defect, or
      decay; perfect of the kind; as, sound timber; sound fruit;
      a sound tooth; a sound ship.
      1913 webster

   2. healthy; not diseased; not being in a morbid state; --
      said of body or mind; as, a sound body; a sound
      constitution; a sound understanding.
      1913 webster

   3. firm; strong; safe.
      1913 webster

            the brasswork here, how rich it is in beams,
            and how, besides, it makes the whole house sound.
                                                  --chapman.
      1913 webster

   4. free from error; correct; right; honest; true; faithful;
      orthodox; -- said of persons; as, a sound lawyer; a sound
      thinker.
      1913 webster

            do not i know you a favorer
            of this new seat? ye are nor sound.   --shak.
      1913 webster

   5. founded in truth or right; supported by justice; not to be
      overthrown on refuted; not fallacious; as, sound argument
      or reasoning; a sound objection; sound doctrine; sound
      principles.
      1913 webster

            hold fast the form of sound words, which thou hast
            heard of me.                          --2 tim. i.
                                                  13.
      1913 webster

   6. heavy; laid on with force; as, a sound beating.
      1913 webster

   7. undisturbed; deep; profound; as, sound sleep.
      1913 webster

   8. founded in law; legal; valid; not defective; as, a sound
      title to land.
      1913 webster

   note: sound is sometimes used in the formation of
         self-explaining compounds; as, sound-headed,
         sound-hearted, sound-timbered, etc.
         1913 webster

   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.
      1913 webster
see also:
sounder soundest sane sound currency 

Currency >> C Words
Currency, definition of term: Currency
currency_pag1.html

Sound >> S Words
Sound, definition of term: Sound
sound_pag1.html

Sound Off >> S Words
Sound Off, definition of term: Sound Off
sound+off_pag1.html

Sound Wave >> S Words
Sound Wave, definition of term: Sound Wave
sound+wave_pag1.html

Sound Pollution >> S Words
Sound Pollution, definition of term: Sound Pollution
sound+pollution_pag1.html

Sound Effect >> S Words
Sound Effect, definition of term: Sound Effect
sound+effect_pag1.html

Sound Bite >> S Words
Sound Bite, definition of term: Sound Bite
sound+bite_pag1.html

Sound Card >> S Words
Sound Card, definition of term: Sound Card
sound+card_pag1.html

Sound Barrier >> S Words
Sound Barrier, definition of term: Sound Barrier
sound+barrier_pag1.html

Paper Currency >> P Words
Paper Currency, definition of term: Paper Currency
paper+currency_pag1.html