The Vietnamese word "đường cấm" is a noun that translates to "no entry" or "no admittance" in English. It refers to a place where vehicles or people are not allowed to go. This term is often used in traffic signs to indicate that a certain road is prohibited for entry.
While "đường cấm" specifically refers to a restricted road, the word "cấm" on its own can also be used in a broader sense, such as prohibiting actions in various contexts (e.g., cấm đánh bạc - no gambling).