A kind of theater in ancient Greece, smaller than the dramatic theater and roofed over, in which poets and musicians submitted their works to the approval of the public, and contended for prizes; -- hence, in modern usage, the name of a hall for musical or dramatic performances.
And certainly into the feeling which impelled a young actress (better known, though, for her smart clothes, her smart sayings, her collection of German porcelain, than in the occasional parts that she had played at the Odéon),
Marcel Proust. In Search of Lost Time [volume 2]
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He remembered how these places were crowded in the rue Monsieur-le-Prince and at the end of the rue de Vaugirard, touching the Odeon; sometimes they followed one another like the old riddecks of the Canal-aux-Harengs, at Antwerp, each of which revealed a front, the counterpart of its neighbour.