She leant against the embrasure of the window, and reread the letter with angry sneers.
Gustave Flaubert. Madame Bovary
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The two physicians moved away from the bedside as she entered, and began to talk quietly together in the embrasure of the window.
Arnold Bennett. The Grand Babylon Hôtel (1902)
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A confidential interview would be held in the embrasure of a window. Such customs disappeared but gradually from the sixteenth century to our own. But by the latter part of the eighteenth, modern ways and ideas were coming in. Yet the étiquette of the French court was still old-fashioned. It infringed too much on the king's privacy; it interfered seriously with his freedom. It exposed him too familiarly to the eyes of a nation overprone to ridicule.
Edward Jackson Lowell. The Eve of the French Revolution