1. Hidden or covert means of communication or distribution, often used for confidential purposes
The organization used secret channels to transfer information without detection.
A organização usou canais secretos para transferir informações sem ser detectada.
2. Unofficial routes or methods for conducting business, negotiations, or diplomacy
The two countries communicated through secret channels to negotiate a peace treaty.
Os dois países se comunicaram através de canais secretos para negociar um tratado de paz.
3. Private pathways or networks used for illicit or hidden purposes
The smugglers operated through secret channels in the port.
Os contrabandistas operavam através de canais secretos no porto.