tipper
['tipə]
n.给小费的人, 自卸车,翻斗车,倾卸装置
例句与用法：
She just tipped the ball over the net.
她刚好把球击过网。
The ball just tipped the edge of his racket.
球仅仅碰到他球拍的边儿。
Her greater experience tipped the balance in her favour and she got the job.
她经验更丰富，这是她得到那份工作的决定性因素。
The arrows had been tipped with poison.
这些箭的箭头上都蘸上了毒药。
详细释义：
n.
1. 给小费的人
2. 倾卸车的搬运夫
3. 倾卸物