attachment · noun /əˈtætʃ.mənt/
Adjectives: attached, unattached, detachable, detached
Verbs: attach, detach
B2 C an extra piece of equipment that can be added to a machine
This food processor has a special attachment for grinding coffee.
B2 C a computer file which is sent together with an email message
I'll email my report to you as an attachment.
I wasn't able to open that attachment.
C2 C or U a feeling of love or strong connection to someone or something
I wasn't aware of any romantic attachments.
Despite this impression she rejected her growing attachment to George in order to fulfil her family's expectation[s]. (Certificate of Proficiency in English; C2; Polish)