spelunking
noun/spəˈlʌŋkɪŋ/
/spəˈlʌŋkɪŋ/
(North American English) (especially British English caving, British English potholing)
[uncountable]- the sport or activity of going into caves under the groundWord Origin1940s: from obsolete spelunk ‘cave’ (from Latin spelunca) + -ing.
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