1. Going from door to door getting candy on Halloween night

Encyclopedia: Trick-or-treating

• Athiorhodaceae
• athirst
• athlete
• athlete's foot
• athlete's heart
• athletic
• athletic competition
• athletic contest
• athletic facility
• athletic field
• athletic game
• athletic sock
• athletic supporter
• clean out
• clean room
• clean slate
• clean-burning
• clean-cut
• clean-handed
• clean-limbed
• clean-living
• clean-shaven
• cleanable
• cleaner
• cleaners