E / exōstra
noun greek

exōstra

gen. exōstrae · gender feminine · decl. 1st
A machine in the theatre; by which the back part of the stage was turned towards the spectators;; public
A machine in the theatre, by which the back part of the stage was turned towards the spectators; transf. of any thing public: quibuscum jam in exostra helluatur, Cic. Prov. Cons. 6, 14.—
A hanging bridge; applied by besiegers to the walls of a besieged city
A hanging bridge, applied by besiegers to the walls of a besieged city, Veg. Mil. 4, 21.