Source : Webster's Revised Unabridged Dictionary (1913)

Hush \Hush\, v. t. [imp. & p. p. {Hushed}; p. pr. & vb. n.
   {Hushing}.] [OE. huschen, hussen, prob. of imitative origin;
   cf. LG. hussen to lull to sleep, G. husch quick, make haste,
   be silent.]
   1. To still; to silence; to calm; to make quiet; to repress
      the noise or clamor of.

            My tongue shall hush again this storm of war.
                                                  --Shak.

   2. To appease; to allay; to calm; to soothe.

            With thou, then, Hush my cares?       --Otway.

            And hush'd my deepest grief of all.   --Tennyson.

   {To hush up}, to procure silence concerning; to suppress; to
      keep secret. ``This matter is hushed up.'' --Pope.

Hush \Hush\, v. i.
   To become or to keep still or quiet; to become silent; --
   esp. used in the imperative, as an exclamation; be still; be
   silent or quiet; make no noise.

         Hush, idle words, and thoughts of ill.   --Keble.

         But all these strangers' presence every one did hush.
                                                  --Spenser.

Hush \Hush\, n.
   Stillness; silence; quiet. [R.] ``It is the hush of night.''
   --Byron.

   {Hush money}, money paid to secure silence, or to prevent the
      disclosure of facts. --Swift.

Hush \Hush\, a.
   Silent; quiet. ``Hush as death.'' --Shak.

Source : WordNet®

hush
     n : (poetic) tranquil silence; "the still of the night" [syn: {stillness},
          {still}]

hush
     v 1: become quiet or still; fall silent; "hush my babay!"
     2: cause to be quiet or not talk; "Please silence the children
        in the church!" [syn: {quieten}, {silence}, {still}, {shut
        up}, {hush up}] [ant: {louden}]
     3: become quiet or quieter; "The audience fell silent when the
        speaker entered" [syn: {quieten}, {quiet}, {quiesce}, {quiet
        down}, {pipe down}] [ant: {louden}]
     4: wash by removing particles; "Wash ores"
     5: run water over the ground to erode (soil), revealing the
        underlying strata and valuable minerals