The Collaborative International Dictionary of English v.0.48:

Barber \Bar"ber\ (b[aum]r"b[~e]r), n. [OE. barbour, OF. barbeor,
   F. barbier, as if fr. an assumed L. barbator, fr. barba
   beard. See 1st Barb.]
   One whose occupation it is to shave or trim the beard, and to
   cut and dress the hair of his patrons.
   [1913 Webster]

   Barber's itch. See under Itch.
      [1913 Webster]

   Note: Formerly the barber practiced some offices of surgery,
         such as letting blood and pulling teeth. Hence such
         terms as barber surgeon (old form

   barber chirurgeon),

   barber surgery, etc.
      [1913 Webster]