Water that falls from clouds in drops; plural of rain, or the verb form meaning drops of water falling from the sky.
From Old English 'regn,' related to Old Frisian 'rein' and possibly connected to Latin 'rigare' (to water). The word has remained remarkably consistent across Germanic languages.
Rain cycles through the atmosphere in an endless journey called the water cycle—a water molecule you drink today could have been drunk by a dinosaur 65 million years ago because water never really leaves Earth.
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