bordering
  設立疆界;取邊
  Bor·der, v. i. [imp. & p. p. Bordered p. pr. & vb. n. Bordering.]
  1. To touch at the edge or boundary; to be contiguous or adjacent; -- with on or upon as, Connecticut borders on Massachusetts.
  2. To approach; to come near to; to verge.
     Wit which borders upon profaneness deserves to be branded as folly.   --Abp. Tillotson.