Attache/ˌætəˈʃeɪ/ Definition 1 of 2Pro Tip 1/3Embassy Specific Used for embassy staff with a particular area of expertise or responsibility. The defense attache at the embassy handles military relations. Pro Tip 2/3Formal Title A formal title for diplomats, often preceding their speciality, such as 'cultural' or 'military'. She was introduced as the new trade attache. Pro Tip 3/3Professional Role Refers to professionals; not to be confused with casual roles or positions. The press attache prepared a statement for the media.