verb (v)

• settle into a position, usually on a surface or ground(verb.motion)

  Synonym:
  settle
  

  source: wordnet30
• become settled or established and stable in one's residence or life style(verb.change)

  Synonym:
  root, settle, steady down, take root
  

  source: wordnet30
• become quiet or calm, especially after a state of agitation(verb.emotion)

  Example:
  It took a while after the baby was born for things to settle down again..
  

  Synonym:
  calm, calm down, chill out, cool it, cool off, simmer down
  

  source: wordnet30