1. People who explore and study caves and underground passages, especially as a hobby or sport.
Usage: Primarily British English; the American equivalent is 'cavers'.; Plural form of potholder.

Examples

• The potholers descended into the limestone cave with their headlamps and safety equipment.
• A group of experienced potholers discovered a previously unmapped chamber deep underground.
• Potholers must be physically fit and comfortable in tight, dark spaces.
• The club organized a weekend trip for amateur potholers to explore the local cave system.
• Professional potholers often conduct geological surveys while exploring new passages.