From Longman Dictionary of Contemporary Englishattachéat‧taché /əˈtæʃeɪ $ ˌætəˈʃeɪ/ noun [countable] PGOsomeone who works in an embassy and deals with a particular subject a cultural attaché
Examples from the Corpus
attaché• a military attaché• Collins laid the attaché case on the low table, consulted the slip of paper and tumbled the rollers.• Other detectives were going through every item in the attaché case and overnight bag.• Study the attaché case and its contents.• The civilian went up the ladder and retrieved the attaché case.• The man you shot is the police attaché at the Legation.• Then I was attached to the Foreign Office in various postings as a defence attaché.• Well, he said, I found this attaché case, see.Origin attaché (1800-1900) French past participle of attacher, from Old French atachier; → ATTACH 