Source : Webster's Revised Unabridged Dictionary (1913)

Trapeze \Tra*peze"\, n. [Cf. F. trap[`e]ze.]
   1. (Geom.) A trapezium. See {Trapezium}, 1.

   2. A swinging horizontal bar, suspended at each end by a
      rope; -- used by gymnasts.

Source : WordNet®

trapeze
     n : a swing used by circus acrobats