surround - noun

the area in which something exists or lives

surround - verb

• extend on all sides of simultaneously; encircle
• envelop completely
• surround so as to force to give up
• surround with a wall in order to fortify

surround - thesaurus

beleaguer   besiege   border   circumvent   environ   environment   environs   fence   palisade   ring   skirt   smother   surroundings   wall