B2 [ C ] an extra piece of equipment that can be added to a machine附件；附属物；附加设备
Many British homes have a shower attachment fixed to the bath taps.
This little attachment allows you take photographs using your mobile phone.
The hairdryer comes with a special attachment which enables you to dry your hair gently.
This attachment makes it easier to vacuum stairs.
You can buy an attachment that turns your drill into a screwdriver.
B2 [ C ] a computer file that is sent together with an email message附件
The paperclip symbol next to the email's subject line shows that there is an attachment.
If it's possible that the attachment might be infected, don't open it, just delete it.
I'll send you the full document as an attachment.
Her email has several attachments that you should look at.
Clicking on this button allows you to make attachments to your email.
C2 [ C or U ] a feeling of love or strong connection to someone or something深厚的感情；喜爱，爱慕
specialized psychology [ C or U ] a feeling of love and need for another person, for example for a mother by her child依恋
[ C or U ] UK specialized law the act of arresting a person for failing to obey the order of a court, or of officially taking their property because they have failed to pay money that they owe（对债务人或其财产的）扣押