sur·round 
(sə-round)
(sə-round)tr.v. sur·round·ed, sur·round·ing, sur·rounds
1. To extend on all sides of simultaneously; encircle: the magnetic field that surrounds the earth.
2. To enclose or confine on all sides so as to bar escape or outside communication: The police surrounded the house.
n.
1. Something, such as fencing or a border, that surrounds: a fireplace surround.
2.
a. The area around a thing or place: inflammation extending to the surround of the eye.
b. often surrounds Surroundings; environment: "It was the country, the flat agricultural surround, that so ravished me" (Listener).
3. A method of hunting wild animals by surrounding them and driving them to a place from which they cannot escape.
[Middle English surrounden, to inundate, from Old French suronder, from Late Latin superundāre : Latin super-, super- + Latin undāre, to rise in waves (from unda, wave; see wed-1 in the Appendix of Indo-European roots).]