orchestra
or.ches.tra \'o.r-k*-str*, -.kes-tr*\ n [L, fr. Gk orche-stra, fr. orcheisthai to dance; akin to Skt ]rsub-dot>gha-yati he raves 1a: the circular space used by the chorus in front of the proscenium in an ancient Greek theater 1b: a corresponding semicircular space in a Roman theater used for seating important persons 2a: a group of instrumentalists including esp. string players organized to perform ensemble music 2b1: the space in front of the stage in a modern theater that is used by an orchestra 2b2: the forward section of seats on the main floor of a theater
Webster's English Dictionary