cyclorama /sī-klə-räˈmə/

1. A circular panorama
2. A curved background in stage and cinematograph sets, used to give impression of sky distance, and for lighting effects

• backstabber
• backstabbers
• backstabbing
• backstage
• backstairs
• backstall
• backstalls
• backstarting
• backstays
• backstitch
• backstitches
• backstop
• backstops
• back story
• back straight
• back straights
• backstreet
• backstreet abortion
• backstreet abortions
• backstreets
• back stretch
• back stretches
• backstroke
• backstrokes
• backswimmer