Sumo Belt
Noun
つな
二つの気球の間を綱渡りした男の人の話はもうお聞きになりましたか？
Have you heard of the guy who walked a tightrope between two hot air balloons?
The kanji is cable but this word refers to more of a rope, which is pretty similar. That being said, it's often used to talk about a sumo belt, so just think about that one.
The reading used here is the reading you learned with the kanji.