tip off1.■给…警告(或暗示)；向…提供内部消息；预先通风报信：Someone unknown tipped off the police about the plan to rob the bank.一匿名者向警方报告有人打算抢银行。Frank tipped me off about a good bargain.弗兰克把一笔赚钱买卖的消息透露给我。2.■(把水等从器皿中)倒干净；使…掉下来：The horse suddenly tipped its rider off.马突然将骑马人掀了下来。3.■[俚语]杀死4.■[俚语]死掉5.■【篮球】中圈跳球