The Collaborative International Dictionary of English v.0.48:

Hem \Hem\, v. t. [imp. & p. p. Hemmed; p. pr. & vb. n.
   Hemming.]
   1. To form a hem or border to; to fold and sew down the edge
      of. --Wordsworth.
      [1913 Webster]

   2. To border; to edge
      [1913 Webster]

            All the skirt about
            Was hemmed with golden fringe.        --Spenser.
      [1913 Webster]

   To hem about, To hem around, or To hem in, to inclose
      and confine; to surround; to environ. "With valiant
      squadrons round about to hem." --Fairfax. "Hemmed in to be
      a spoil to tyranny." --Daniel.

   To hem out, to shut out. "You can not hem me out of
      London." --J. Webster.
      [1913 Webster]