Definition of rain
(Entry 1 of 2)
rain
verb
rained; raining; rains
Definition of rain (Entry 2 of 2)
1
: to send down rain
2
: to fall as water in drops from the clouds
3
: to fall like rain
soot and ash rained down
rain cats and dogs
: to rain heavily
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Merriam-Webster unabridged
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Time Traveler for rain
The first known use of rain was before the 12th century
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