Source : Webster's Revised Unabridged Dictionary (1913)

Bramble bush \Bram"ble bush`\ (b[.u]sh`). (Bot.)
   The bramble, or a collection of brambles growing together.

         He jumped into a bramble bush And scratched out both
         his eyes.                                --Mother
                                                  Goose.

Source : WordNet®

bramble bush
     n : any prickly shrub of the genus Rubus bearing edible
         aggregate fruits