rainreɪn(n.)

1. water that is condensed from the aqueous vapor in the atmosphere and falls to earth in drops.

   Category: Meteorology

2. a rainfall, rainstorm, or shower.

   Category: Meteorology

3. rains, the rainy season; seasonal rainfall.

   Category: Meteorology

4. weather marked by steady or frequent rainfall.

   Category: Meteorology

5. a heavy and continuous descent or inflicting of anything:

   a rain of blows; a rain of vituperation.

6. (v.i.)(of rain) to fall (usu. used impersonally with it as subject):

   It rained all night.

7. to fall like rain:

   Tears rained from their eyes.

8. to send down rain.

9. (v.t.)to send down as or like rain.

   Category: Common Vocabulary

10. to offer or bestow in great quantity; shower:

    to rain favors upon a person.

11. rain out, to cancel or postpone because of rain.

    Category: Verb Phrase

Idioms for rain:

1. rain cats and dogs,to rain very heavily or steadily.

   Category: Idiom

Origin of rain:

bef. 900; (n.) ME rein; OE regn, rēn, c. D, G regen, ON regn, Go rign; (v.) ME reinen, OE regnian

rain′less(adj.)