hush in WordNet English dictionary

1. (poetic) tranquil silence
   "the still of the night"
   hush  stillness  still 
   

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