The Vietnamese word "bắt cóc" is a verb that means "to kidnap" or "to hijack." It is used in situations where someone is taken away against their will, often for illegal reasons such as ransom or demands.
Bắt cóc trẻ em để tống tiền.
Bọn tội phạm đã bắt cóc máy bay.
In summary, "bắt cóc" is a significant term in Vietnamese that specifically refers to the act of kidnapping or hijacking.