A closing mechanism is a device used to secure an opening, such as a door or window. The term 'LATCH' is a five-letter word that is commonly used to refer to a type of closing mechanism. A LATCH typically consists of two parts: a spring-loaded metal arm that is attached to the frame of the opening and a catch that is attached to the door or window. When the door or window is closed, the catch engages with the arm, preventing the door or window from being opened.