noun / verb
latch
LACH/lætʃ/
A catch that holds something closed, or fastening something with one.
The metal latch holds the wooden gate closed.
Etymology
The fastening's name probably comes from a verb meaning “to grasp or seize.” A latch is thus a device that catches and holds, keeping a door or gate closed.
In context
Catherine personally checked every window latch, and then checked the door locks twice.