From Longman Dictionary of Contemporary Englishswitchbackswitch‧back /ˈswɪtʃbæk/ noun [countable] TTRa road or track that goes up and down steep slopes and around sharp bends
Examples from the Corpus
switchback• Then, gradually the route wound downward, switchback after switchback.• The trail loops to the south flank of Eddy, then climbs 900 feet with seven switchbacks.• You can see its deep canyons, the switchbacks of a few trails.• And what does the switchback say about the company, the media sector and the mood in the economy?• Very soon he will be up for Oscars and head over heels in the switchback strip of movies.• How do people endure this switchback of emotion?• It was a tortuous, switchback ride. 