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spelunk

[spi-luhngk] /spɪˈlʌŋk/
verb (used without object)
1.
to explore caves, especially as a hobby.
Origin
back formation from spelunker, spelunking
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for spelunk
  • If you plan to spelunk in caves without modern amenities, bring a headlamp and a flashlight with extra batteries.

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