secure² v [T] 1 to get something important, especially after a lot of effort 〔尤指经过努力〕获得: a treaty that will secure peace 缔造和平的条约 2 to fasten or tie something firmly 系住，缚住: We secured the boat with a rope. 我们用绳子系住小船。 3 to make something safe from being attacked or harmed 使安全，防守，保护