# fastener

/ˈfæsənɝ/ (US) · /fˈɑːstənɐ/ (UK) · CEFR B2 · Noun

Source: https://englishreference.com/word/fastener
Updated: 2026-10-15

## Definition

a small object that holds two things together, like a button, zip, or clip. You use it on clothes, bags, or boxes to keep them closed.

For teachers: a mechanical device for joining or securing two objects or parts together, such as a zip, button, snap, clip, or bolt. Covers both clothing closures and hardware fixings.

## Examples

- This jacket has a broken fastener.
- She replaced the broken fastener on her backpack so the front pocket would stay closed.
- The conservator examined each corroded fastener on the archival case, knowing that modern replacements would compromise the artifact's historical integrity.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.