En·vi·ron v. t. [imp. & p. p. Environed p. pr. & vb. n. Environing.]  To surround; to encompass; to encircle; to hem in; to be round about; to involve or envelop.
  Dwelling in a pleasant glade,
  With mountains round about environed.   --Spenser.
     Environed he was with many foes.   --Shak.
     Environ me with darkness whilst I write.   --Donne.