pour down

1. (intransitive) To rain heavily.
   • 1922 February, James Joyce, Ulysses, Paris: Shakespeare & Co.; Sylvia Beach, OCLC 560090630 ↗; republished London: Published for the Egoist Press, London by John Rodker, Paris, October 1922, OCLC 2297483 ↗:

     Episode 12, The Cyclops

     A torrential rain poured down from the floodgates of the angry heavens upon the bared heads of the assembled multitude which numbered at the lowest computation five hundred thousand persons.

• bucket down
• chuck it down
• lash down
• pelt
• pelt down
• piss down
• pour
• rain cats and dogs
• stream
• teem
• whip down