Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “fasten”

fasten

verb uk   /ˈfɑː.sən/ us    /ˈfæs.ən/
B1 [I or T] to (cause something to) become firmly fixed together, or in position, or closed: Make sure your seat belt is securely fastened. This shirt fastens at the back.Fastening and tying fasten sth on, together, etc. B2 to fix one thing to another: I fastened the sticker to the windscreen.Fastening and tying
Phrasal verbs
(Definition of fasten from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of fasten?
Browse related topics

You are looking at an entry to do with Fastening and tying, but you might be interested in these topics from the Cutting and joining topic area:

Add Cambridge dictionaries to your browser to your website

Definitions of “fasten” in other dictionaries

Word of the Day

flair

natural ability to do something well

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More