Related Clues:

• Trajectory
• It's hot stuff!
• Circle bit
• Curve
• Popocatepetl flow
• Pigskin path
• Stuff from Stromboli
• Vesuvius product
• Bowlike line
• Post-magma?
• Fly ball's path
• Rainbow, e.g.
• Curvature
• Semi-circle
• Bow part