1. The inclusion of a humorous content in an otherwise serious work, often to relieve tension

Encyclopedia: Comic relief

• rain barrel
• rain buckets
• rain cats and dogs
• rain check
• rain cloud
• rain dance
• rain date
• rain down
• rain gage
• rain gauge
• rain out
• rain shadow
• rain shower
• rain stick
• rain tree
• Rain-giver
• Rain-in-the-Face
• rain-wash
• rainbird
• rainbow
• rainbow cactus
• rainbow fish
• rainbow lorikeet
• rainbow perch
• rainbow pink