Source : Webster's Revised Unabridged Dictionary (1913)

Bird cherry \Bird" cher`ry\ (Bot.)
   A shrub ({Prunus Padus} ) found in Northern and Central
   Europe. It bears small black cherries.

Source : WordNet®

bird cherry
     n : any of several small-fruited cherry trees frequented or fed
         on by birds [syn: {bird cherry tree}]