[Fr. espagnolette, f. espagnol Spanish.] The fastening of a French window; also attrib.
1870. Daily News, 20 Dec., 6/1. Had he fallen it might have been the better for him; but the neckcloths and the espagnolette held fast and prevented him.
1876. Gwilt, Encycl. Archit., 687. For French casements, what is called the Espagnolette bolt is now in use.
1887. Pall Mall Gaz., 19 Sept., 5/2. Paris has espagnolette windows opening like doors.