1 a telephone call that you arrange to be made to you at a particular time, for example in a hotel, in order to wake you up 催醒电话；叫早电话: I asked for a wake-up call at 6:30 a.m. 我叫他们在早晨 6:30 用电话叫醒我。

2 [sing] an event that makes people realize that there is a problem or other bad situation that they need to do sth about ﹙让人意识到问题或不利处境的﹚惊醒警告: These riots should be a wake-up call for the administration. 这些暴乱应该为政府敲响警钟。