Source : Webster's Revised Unabridged Dictionary (1913)

Breakaway \Break"a*way`\, n. [Break + away] [Australasia]
   1. A wild rush of sheep, cattle, horses, or camels
      (especially at the smell or the sight of water); a
      stampede.

   2. An animal that breaks away from a herd.

Source : WordNet®

breakaway
     adj : having separated or advocating separation from another
           entity or policy or attitude; "a breakaway faction"
           [syn: {fissiparous}, {separatist}]
     n : the act of breaking away or withdrawing from; "there was a
         breakaway by the discontented members"; "a breaking away
         from family and neighborhood" [syn: {breaking away}]