spe ‧ lunk ‧ ing /spəˈlʌŋkɪŋ, spɪˈlʌŋkɪŋ/ BrE AmE noun [uncountable] American English
[ Date: 1900-2000 ; Language: Latin ; Origin: spelunca 'cave' , from Greek spelynx ]
the sport of walking and climbing in ↑ cave s
—spelunker noun [countable]
spe ‧ lunk ‧ ing /spəˈlʌŋkɪŋ, spɪˈlʌŋkɪŋ/ BrE AmE noun [uncountable] American English
[ Date: 1900-2000 ; Language: Latin ; Origin: spelunca 'cave' , from Greek spelynx ]
the sport of walking and climbing in ↑ cave s
—spelunker noun [countable]
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012