crevice (n.) Look up crevice at Dictionary.com
mid-14c., from Old French crevace (12c., Modern French crevasse) "gap, rift, crack" (also, vulgarly, "the female pudenda"), from Vulgar Latin *crepacia, from Latin crepare "to crack, creak" (see raven); meaning shifted from the sound of breaking to the resulting fissure.