Related Clues:

• Soap containing volcanic pumice
• Rock that runs
• Source of basalt
• Ellipse part
• Path across the sky
• Arrow trajectory
• Geometric segment
• Ejected magma
• Dart's path
• Semicircle, e.g.
• Compass creation
• Plot line
• Magma, after surfacing
• Parabola, e.g.
• Certain eyebrow shape