1. Catch for fastening a door or gate; a bar that can be lowered or slid into a groove
   "He lifted the latch to open the garden gate"
    
2. Spring-loaded doorlock that can only be opened from the outside with a key
   "He heard the door latch click as he closed it behind him";
   - door latch

1. Fasten with a latch
   "latch the door"

Derived forms: latched, latches, latching

Type of: catch, fasten, fix, lock, secure

Encyclopedia: Latch