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English definition of “attach”

attach

verb [T] uk   /əˈtætʃ/ us  

attach verb [T] (CONNECT)

B1 to fasten, join, or connect something: I attached a photo to my application form. Use this cable to attach the printer to the computer. In the UK , packets of cigarettes come with a government health warning attached to them (= on them). I attach (= am sending, usually with a letter) a copy of our latest report.
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attach verb [T] (COMPUTING)

B1 to join a file such as a document, picture, or computer program, to an email

attach verb [T] (TAKE GOODS)

UK specialized law to officially take someone's money or the things that they own, or to arrest someone, usually because that person has failed to pay money that is owed
(Definition of attach from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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