Pronunciation (US) IPA (key): /ˈfæsənɚ/ or /ˈfæsnɚ/ (UK) IPA (key): /ˈfɑːsənə/ or /ˈfɑːsnə/ (NZ) IPA (key): /ˈfɐːsɘnɘ/ or /ˈfɐːsnɘ/ Audio (US)(file) Hyphenation: fast‧en‧er, faste‧ner Noun Singular fastener Plural fasteners (countable) A fastener is something that closes or secures an item. Related words fastenWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads