Source : Webster's Revised Unabridged Dictionary (1913)

Rainfall \Rain"fall`\, n.
   A fall or descent of rain; the water, or amount of water,
   that falls in rain; as, the average annual rainfall of a
   region.

         Supplied by the rainfall of the outer ranges of Sinchul
         and Singaleleh.                          --Hooker.

Source : WordNet®

rainfall
     n : water falling in drops from vapor condensed in the
         atmosphere [syn: {rain}]