Synonyms of 'latch'
He latched the door, tested it and turned round to speak to us.
phrasal verb:latch on to something
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If you bar a door, you place something in front of it or a piece of wood or metal across it in order to prevent it from being opened.
For added safety, bar the door to the kitchen.
Thesaurus for latch from the Collins English Thesaurus
A latch is a fastening on a door or gate. It consists of a metal bar which you lift in order to open the door.