phr. (theatrical).—1. See quot. 1823.
1823. GROSE, A Classical Dictionary of the Vulgar Tongue [EGAN], s.v. O.P. and P.S. Theatrical cant, for Opposite the Prompter and Prompt Side.
1836. DICKENS, Sketches by Boz, p. 69. That gentleman … lounging behind the stage-box in the O.P. side.
1885. The Sportsman, 23 June, 2, 1. The limelight mechanic made a gorgeous full moon in a convenient position on the O.P. side.
2. (booksellers’).—‘Out of print.’
