Definitions of surround:

• noun:   the area in which something exists or lives

  Example: "The country--the flat agricultural surround"

• verb:   be around

  Example: "Developments surround the town"

• verb:   extend on all sides of simultaneously; encircle

  Example: "The forest surrounds my property"

• verb:   envelop completely
• verb:   surround so as to force to give up
• verb:   surround with a wall in order to fortify