/ˌæn.tiˌsɜːr.kəmˈven.ʃən dɪˈvaɪs/ – Phrase
Definition: Thiết bị chống tránh.
A more thorough explanation: a tool used to prevent the unauthorized use or copying of copyrighted material
Example: It is probably safe to say that the legislation, specifically the anti-circumvention-device clauses, were only intended to protect movies, music, software, and other traditional media.