1. a person who explores and maps underground caves and passages
Usage: chiefly British; also called a caver or speleologist in some contexts
2. a person who fills in or repairs potholes in roads
Usage: informal; chiefly British

Examples

• The experienced potholer descended into the cave system with specialized equipment.
• Potholers have discovered several new underground passages in the region.
• She became a potholer after developing a passion for cave exploration.
• The road crew sent potholers out to repair the damaged asphalt.
• Potholing requires careful planning and safety precautions.
• Many potholers belong to clubs that organize expeditions into caves.