fas‧ten‧er /ˈfɑːsənə $ ˈfæsənər/ (also fas‧ten‧ing /ˈfaːsənɪŋ $ ˈfæ-/) noun [countable]
[Word Family: verb: fasten ≠ unfasten; noun: fastener]

1. something that you use to join something together, such as a button on a piece of clothing:
shoes with velcro fasteners

2. something that is used to keep a door, window etc firmly shut Synonym : latch

[TahlilGaran] Dictionary of Contemporary English ▲