Literally: crouch – too much – bend – fold / fracture
Alternately: 紆余 refers to something, especially a road, being full of twists and turns. 曲折 similarly refers to something being bent or zig-zag. Put them together and you get a compound that describes an intricately complicated situation; especially a problem or decision that ties into other issues and will take a lot of time and trouble to resolve – if any decision is ever reached at all.
Notes: Replacing 折 with homophone 節 (“node”) is considered an error. However, replacing 紆 with homophone 迂 (“roundabout way”), while rare, is acceptable.