bob /bɒb/ ( bobbing, bobbed, bobs )

• 1. 

  V-I If something bobs, it moves up and down, like something does when it is floating on water. 上下浮动

  例：

  Huge balloons bobbed about in the sky above.

  巨大的气球在上空上下浮动。

• 2. 

  V-I If you bob somewhere, you move there quickly so that you disappear from view or come into view. 快速移动

  例：

  She handed over a form, then bobbed down again behind a typewriter.

  她递过来一张表格，又快速坐回到打字机后面。

• 3. 

  N a short abrupt movement, as of the head 点头

• 4. 

  N a hairstyle for women and children in which the hair is cut short evenly all round the head 波波短发

• 5. 

  V to cut (the hair) in a bob 剪成波波造型

• 6. 

  N [英国英语] → (formerly) an informal word for a shilling

• 7. 

  V to tap or cause to tap or knock lightly (against) 轻敲; 使轻敲

• 8. 

  N a light knock; tap 轻敲