Related Clues:
- Smoothing stuff
- Like rock formed when magma solidifies
- Rubbing the wrong way?
- Rock type
- Sandpaper-like
- Rock category
- Fire-formed rock
- Causing irritation
- Given to violent eruption like natural force
- Relating to fissures which produce lava
- Relating to eruption in earth's surface
- Of fissures that produce lava
- Grating and rough
- Rough and scratchy
- Of lava-producing fissures