Source : Webster's Revised Unabridged Dictionary (1913)

Burning \Burn"ing\, a.
   1. That burns; being on fire; excessively hot; fiery.

   2. Consuming; intense; inflaming; exciting; vehement;
      powerful; as, burning zeal.

            Like a young hound upon a burning scent. --Dryden.

   {Burning bush} (Bot.), an ornamental shrub ({Euonymus
      atropurpureus}), bearing a crimson berry.

Source : WordNet®

Euonymus atropurpureus
     n : deciduous shrub having purple capsules enclosing scarlet
         seeds [syn: {wahoo}, {burning bush}]