latch
nounA fastening, as for a door or gate, typically consisting of a bar that fits into a notch or slot and is lifted from either side by a lever or string.
nounA spring lock, as for a door, that is opened from the outside by a key.
intransitive verbTo close or lock with a latch.
intransitive verbTo have or be closed with a latch.
intransitive verbTo shut tightly so that the latch is engaged.
idiom(on to/onto) To get hold of; obtain.
idiom(on to/onto) To cling to.
nounA miry place.
nounA device for catching or retaining something; a catch.
nounA kind of gravity-lock, or door fastening consisting of some form of pivoted bolt falling into and catching against a catch or stop. Latches are usually made with a lifter or lever for raising the bar from either side of the door. Some simple forms consist merely of a wooden baron the inside, which is raised by a string passed through a hole in the door, Door- and gate-latches are made in many forms, and are described by their names, rim-, night-, thumb-latches, etc.