hush

Short definition from Wiktionary

Verb

1. 1
   To become quiet.
2. 2
   To make quiet.
3. 3
   To appease; to allay; to soothe.
4. 4
   To clear off soil and other materials overlying the bedrock.

Noun

1. 1
   A silence, especially after some noise
2. 2
   A mining method using water