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cremorne bolt

American  
[kri-mawrn] / krɪˈmɔrn /
Also cremone bolt

noun

  1. (on a French window or the like) a pair of rods, moved by a knob mechanism, sliding into sockets in the head and sill of the opening to provide a secure fastening.


Etymology

Origin of cremorne bolt

< French crémone, probably after Cremona