Rainstorm (noun)

A storm characterized by heavy rain.

Origin:

Mid 19th century: from rain + storm.

Examples:

1. The rainstorm caused flooding in the streets.
2. During the rainstorm, the wind was so strong that it broke branches off of the trees.
3. The forecast called for a rainstorm later in the evening.
4. She took an umbrella with her, anticipating a rainstorm.
5. The rainstorm lasted for several hours and left the streets flooded.