From Longman Dictionary of Contemporary Englishrope ladderˈrope ˌladder noun [countable] TZa ladder made of two long ropes connected by wooden pieces that you stand on
Examples from the Corpus
rope ladder• Talbot, accompanied by Denholm, climbed down a rope ladder to greet the owner.• The police crew secured a line to the bow, then dropped a rope ladder over the side.• Instead there is a perpendicular rope ladder.• As she looked up into the spotlight and the rope ladder unfurled she thought the Chinooks had come for her. 