rainstorm

rain +‎ storm

rainstorm (plural rainstorms)

1. A storm characterized by substantial, heavy rainfall.
   • 1913, Joseph C[rosby] Lincoln, chapter VIII, in Mr. Pratt’s Patients, New York, N.Y., London: D[aniel] Appleton and Company, →OCLC:

     Philander went into the next room […] and came back with a salt mackerel that dripped brine like a rainstorm. Then he put the coffee pot on the stove and rummaged out a loaf of dry bread and some hardtack.

   • 2022 November 16, Paul Bigland, “From rural branches to high-speed arteries”, in RAIL, number 970, page 55:

     To make matters worse, we pass through a torrential rainstorm, which makes window-gazing almost impossible, leaving me glad that the trip is less than 30 minutes duration.

• deluge
• hailstorm
• snowstorm
• thunderstorm