surround in WordNet English dictionary

1. surround so as to force to give up
   "The Turks besieged Vienna"
   besiege  beleaguer  surround  hem in  circumvent 
   
2. extend on all sides of simultaneously; encircle
   "The forest surrounds my property"
   surround  environ  ring  skirt  border 
   
3. surround with a wall in order to fortify
   wall  palisade  fence  fence in  surround 
   
4. envelop completely
   "smother the meat in gravy"
   smother  surround 
   

1. the area in which something exists or lives
   "the country--the flat agricultural surround"
   environment  environs  surroundings  surround