| Language: | Old English |
| Origin: | regn |
1 [uncountable]DN water that falls in small drops from clouds in the sky :
a night of wind and rain ➔ acid rain, rain drop, rainy
a night of wind and rain heavy/torrential/pouring rain (=a lot of rain)
There will be heavy rain in most parts of the country.
There will be heavy rain in most parts of the country.2 heavy rain that falls during a particular period in the year in tropical countries [= monsoon]:
Last year, the rains came on time in April.
the rains
DNHEM
Last year, the rains came on time in April.3 a large number of things falling or moving through the air together :
The archers sent a rain of arrows towards the enemy.
rain of something
The archers sent a rain of arrows towards the enemy.4 whatever happens or whatever the weather is like :
Don't worry. We'll be there - rain or shine.
(come) rain or shine
spoken
Don't worry. We'll be there - rain or shine. —rainless adjective

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