Tightrope

['taɪtrəʊp] or ['taɪtrop]

(noun.) tightly stretched rope or wire on which acrobats perform high above the ground.

海伦手打--From WordNet

The famous Blondin was going to perform on a tightrope in another part of the garden. 马克·吐温. 傻子出国记.
Thee wath Tightrope, thee wath, and now thee'th nothing—on accounth of fat. 查尔斯·狄更斯. 艰难时事.

手打:斯坦