A tightrope is a very thin and stretched rope or wire that acrobats or tightrope walkers use to perform balancing acts high off the ground. Full definition
Now, why is it that young folks that have very little knowledge or skill in walking tightropes want to try to do it... when there is a walking bridge about 50» feet away that has $ 500 on the other side everyday? (biggerpockets.com)
There was a round table on the protection of personal data — a tricky tightrope between rights of individuals and public rights. (slaw.ca)
Mario Kart walks the great tightrope of between casual and hardcore. (altchar.com)