Source : Webster's Revised Unabridged Dictionary (1913)

Reverend \Rev"er*end\, a. [F. r['e]v['e]rend, L. reverendus, fr.
   revereri. See {Revere}.]
   Worthy of reverence; entitled to respect mingled with fear
   and affection; venerable.

         A reverend sire among them came.         --Milton.

         They must give good example and reverend deportment in
         the face of their children.              --Jer. Taylor.

   Note: This word is commonly given as a title of respect to
         ecclesiastics. A clergyman is styled the reverend; a
         dean, the very reverend; a bishop, the right reverend;
         an archbishop, the most reverend.

Source : WordNet®

reverend
     adj : worthy of adoration or reverence [syn: {revered}, {reverenced},
            {sublime}, {venerated}]

reverend
     n 1: a member of the clergy and a spiritual leader of the
          Christian Church [syn: {clergyman}, {man of the cloth}]
          [ant: {layman}]
     2: a title of respect for a clergyman