What does latch mean?
A latch is a movable fastening used to keep a door, gate, window, lid, or container closed, and “latch” can also refer to the act of securing something this way. As a verb, it describes fastening a latch or holding firmly onto something. The expression “latch onto” is especially common in informal speech: it can mean grabbing hold of a person or object, but it can also mean becoming deeply interested in an idea, opportunity, or development. For example, a visitor may latch onto a tour guide, while a journalist may latch onto a promising story. Although its basic sense is mechanical, the word is useful in both practical and figurative contexts. In older and specialized uses, a latch can also refer to a simple gate or barrier that opens in one direction, recalling the word’s historical association with securing entrances.
A hinged, sliding, or other movable fastening that keeps a door, gate, window, lid, or container closed.
"The latch on the wooden gate was old but sturdy."
In some architectural contexts, “latch” can also refer to a simple gate or barrier.
To fasten something with a latch; to grasp or hold onto something firmly; to become firmly attached to or interested in something.
"He latched the gate behind him and then latched onto the opportunity to travel."
The expression “latch onto” is informal in both its physical and figurative meanings.
The plural is formed by adding -es.
"Several latches on the old chests had rusted shut."
A latch began as a gate or barrier and later became the movable fastening that keeps it closed; in modern English, it can also mean attaching yourself firmly to an idea, opportunity, or person.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of latch
The word comes from Old English læcca, meaning a gate or bar, and related forms referred to securing or fastening an entrance. The modern sense of a fastening device developed from this earlier sense of a barrier. The verb’s figurative meanings, including taking a firm hold or becoming attached to something, developed by extension from the physical action of fastening or catching hold.
Related word forms
How latch is actually used
As a verb, “latch onto” is informal and can mean either physically grasp something or figuratively become strongly interested in or attached to it. In formal writing, “attach oneself to” or “show keen interest in” may be preferable.
Easily confused with latch
A latch is a fastening device, whereas a catch is the mechanism or action that secures something, often a small metal fitting.