home r Krystian Kujda rain [reyn] –noun 1. water that is condensed from the aqueous vapor in the atmosphere and falls to earth in drops more than 1/50 in. (0.5 mm) in diameter. 2. a rainfall, rainstorm, or shower: We had a light rain this afternoon. 3. rains, the rainy season; seasonal rainfall, as in India. 4. weather marked by steady or frequent rainfall: We had rain most of last summer. a b c d e f g h i j k l m n o p q r s t u v w x y z rack rain ray rainbow raze radio read reach record recumbent rabbit red-rev rat