Source : Webster's Revised Unabridged Dictionary (1913)

Barb \Barb\, v. t. [imp. & p. p. {Barbed} (?); p. pr. & vb. n.
   {Barbing}.]
   1. To shave or dress the beard of. [Obs.]

   2. To clip; to mow. [Obs.] --Marston.

   3. To furnish with barbs, or with that which will hold or
      hurt like barbs, as an arrow, fishhook, spear, etc.

            But rattling storm of arrows barbed with fire.
                                                  --Milton.