spelunker

noun

Etymology: From then-obsolete spelunk (noun) + -er. Coined by New England cave explorer Roger Charles Johnson in the 1930s.

1. One who explores caves; one who spelunks.

   “I took to fishing, on mountain brooks and lakes, and finally I was inveigled into becoming a spelunker. A spelunker is a human worm who crawls into caves ("splunca" is Latin for cave) and explores them.”

2. An amateur or inadequately prepared caver.

   “I am officially a spelunker – but not yet a caver. The dictionary definition of spelunking is “exploring caves for sport.” Serious enthusiasts shun the term, however. They are cavers. A spelunker is an inexperienced amateur. On this dry and balmy mid-November Saturday, our group contains three spelunkers and two cavers.”

   “But the scariest of all’s the witless caver; Spelunker is the name that he goes by. He caves alone with just one light, A worn-out rope, and boots too tight, Looking for a cave in which to die.”