Related Clues:

• Nuit shiner
• Pitched softball's path
• Debussy's ''Clair de ---''
• Curve shape
• Rainbow, for one
• Not the shortest line between two points
• Compass course?
• Go up in the middle
• Smiley face smile
• Part of a sector
• Sphere segment
• Parenthesis, e.g.
• It doesn't go full circle
• Storyline
• Not quite a circle