The Dutch word for rain is
regen

Dutch Definition

regen	©
1. n-m. rain
2. v. first-person singular present indicative of regenen
3. v. imperative of regenen
4. v. plural past indicative of rijgen
5. v. plural past subjunctive of rijgen

regenen
1. v. (impersonal) To rain, to precipitate.
Het regent alweer. - It's raining again.
2. v. (impersonal, figuratively) To accumulate in large amounts, as though by rain
Het regent klachten over je gedrag! - It's raining complaints about your behaviour!
3. v. To pour down, to fall out of the sky in large amounts
In de herfst regenen de bladeren van de bomen. - In autumn, the leaves rain down from the trees.