/ lætʃ; NAmE / noun , verb
a small metal bar that is used to fasten a door or a gate. You raise it to open the door, and drop it into a metal hook to fasten it :
He lifted the latch and opened the door.
( especially BrE ) a type of lock on a door that needs a key to open it from the outside :
She listened for his key in the latch.
- on the latch
[ vn ] to fasten sth with a latch
- latch on (to sth) | latch onto sth
- latch on (to sb/sth) | latch onto sb/sth
Old English læccan take hold of, grasp (physically or mentally) , of Germanic origin.