Rope
A Rope is a relatively rare object in Super Mario World. Usually, Ropes are linked to a mechanism moving constantly left and right (or up and down), allowing Mario and Luigi to grab onto the Rope and thus to cross abysses, for example. When riding Yoshi, however, the Player will not be able to grab the Rope.
Other Appearances
Ropes make several other appearances in the Mario series. They are mainly found in Mini-games of the Mario Party series. In Hot Rope Jump, the Players are supposed to jump over a Rope made of Podoboos. Chump Rope has a similar object. In Get a Rope, the Player's task is to choose one out of three Ropes.
Ropes also appear in the Donkey Kong series. There is an object called Ghost Rope, resembling a Rope. The level Konveyor Rope Klash in Donkey Kong Country 3: Dixie Kong's Double Trouble! heavily features Ropes.