'Rainfall' definitions:

Definition of 'rainfall'

(from WordNet)
noun
Water falling in drops from vapor condensed in the atmosphere [syn: rain, rainfall]

Definition of 'Rainfall'

From: GCIDE
  • Rainfall \Rain"fall`\ (r[=a]n"f[add]l`), 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. [1913 Webster]
  • Supplied by the rainfall of the outer ranges of Sinchul and Singaleleh. --Hooker. [1913 Webster]

Synonyms of 'rainfall'

From: Moby Thesaurus