surround

nouns

the area in which something exists or lives
"the country--the flat agricultural surround"

verbs

extend on all sides of simultaneously; encircle
"The forest surrounds my property"
is derived from
envelop completely
"smother the meat in gravy"
surround so as to force to give up
"The Turks besieged Vienna"
surround with a wall in order to fortify