• v. 洞穴研究，洞穴探險(xiǎn)

來(lái)自拉丁語(yǔ) spelunca,來(lái)自希臘語(yǔ) spelynx,來(lái)自 spelos,洞穴，可能來(lái)自 PIE*spel,分開(kāi)，劈開(kāi)， 詞源同 spill,splinter.

spelunk (n.)

"a cave, cavern, a vault," c. 1300, from Old French spelonque (13c.) or directly from Latin spelunca "a cave, cavern, grotto," from Greek spelynx (accusative spelynga, genitive spelyngos) "a cave, cavern," from spelos "a cave." An adjective, speluncar "of a cave" is recorded from 1855.