tightwire

noun

1. A tightrope.

   “The Chinese Conjurer's dramatic jumps, flexed wrists, and endless fingers are fascinating; the Acrobats, whose dance suggests tumbling, juggling, and walking on the tightwire, display a breathtaking virtuosity; the Little American Girl's pyrotechnical performance is pretty and pert; and the two men in a horse suit almost inevitably reduce the audience to helpless laughter.”