A mechanism attached to a door and used to open or close it.
A fastening for a door that has a bar that fits into a notch or slot, and is lifted by a lever or string from either side.
A breastfeeding baby's connection to the breast.
A lightweight lock to protect internal structures from being modified by multiple concurrent accesses.
An electronic circuit that is like a flip-flop, except that it is level triggered instead of edge triggered.
To catch; lay hold of.
To close or lock as if with a latch.