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Noun: spelunker  spi'lúng-kur
Usage: N. Amer (elsewhere: potholer)
  1. A person who explores caves
    "The experienced spelunker led the group through the narrow passages";
    - potholer [Brit], speleologist, spelaeologist, caver

Derived forms: spelunkers

Type of: adventurer, explorer

Encyclopedia: Spelunker