/ ˈæbseɪl; NAmE / ( BrE ) ( NAmE rap·pel ) verb
[ v ] abseil (down, off, etc. sth) to go down a steep cliff or rock while attached to a rope, pushing against the slope or rock with your feet
► ab·seil ( BrE ) ( NAmE rap·pel ) noun
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WORD ORIGIN
1930s: from German abseilen , from ab down + Seil rope.