Source : Webster's Revised Unabridged Dictionary (1913)

Shower \Show"er\, v. t. [imp. & p. p. {Showered}; p. pr. & vb.
   n. {Showering}.]
   1. To water with a shower; to ??t copiously with rain.

            Lest it again dissolve and shower the earth.
                                                  --Milton.

   2. To bestow liberally; to destribute or scatter in ?undance;
      to rain. --Shak.

            C?sar's favor, That showers down greatness on his
            friends.                              --Addison.