To latch the bolt on the window when it is closed tonight, the meaning of bolt in the context ; would be : a bar that slides to lock something. This is because ;
Definition 2 has nothing to do with a bolt on the window, hence, it is incorrect.
Definition 4 is incorrect as well because bolts are metallic and aren't made of fabric or wall paper.
The aim of latching the bolt is to ensure the window is tightly closed, hence, the latching involves the use of a metal bar to catch or fasten a door, this means lat Hong the bolt is more closely related to a bar that slides to lock something than a screw for fastening in this context.
